Private Limited Company

DESK TOP PUBLISHING MICRO SYSTEMS LIMITED

ActiveCompany 02711141United Kingdom
Bulk record snapshot1 OCT 2026Source details →

Registered office

DTP HOUSE UNIT 3, CASTLETON ROAD, LEEDS, ENGLAND, LS12 2EN
Incorporated30 April 1992
Company age34 years

TXT In plain English

Company description

BritDB description

DESK TOP PUBLISHING MICRO SYSTEMS LIMITED is a UK company whose Companies House status is “Active” and whose registered company type is “Private Limited Company”. Incorporated on 30 April 1992; registered for 34 years; registered office reported in LEEDS, ENGLAND. Its primary declared activity is 62090 · Other information technology service activities.

In its latest electronically filed accounts for the period ended 30 June 2025, it reported profit after tax −£237,588, net assets £1,632,010, average employees 1. This BritDB profile also contains linked public records: 1 PSC record, 40 procurement records, 1 waste registration. This description is assembled from public data, is not a reliability assessment, and should be checked against the cited sources before a legally significant decision.

Prepared from public dataChecked 10 October 2026 · 9 profile sources connected
How this description is built →
i

Web facts are never added from a name match alone. Internet enrichment requires the exact Companies House ID in Wikidata, and ambiguous results are excluded.

01 Company overview

Identity and registration

Snapshot 1 October 2026
Official name
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Company number
02711141
Company type
Private Limited Company
Status
Active
Country of origin
United Kingdom
Dissolution date
Not supplied
Accounts category
FULL
Mortgage charges
3 total · 2 outstanding · 1 satisfied
Limited partnership members
0 general · 0 limited
i

A registered office is not necessarily a trading location. The address is reproduced from the Companies House bulk record and should be interpreted in that legal context.

02 Filing dates

Accounts and statements

Companies House
AccountsBulk record

Last accounts made up to

30 June 2025

Next accounts due

28 March 2027
Confirmation statementBulk record

Last statement made up to

30 April 2026

Next statement due

14 May 2027
Filing source and official link →

BritDB does not infer overdue status when the source does not state it.

03 Filed financials

Latest electronic accounts

Period to 30 June 2025
Accounts typeNot supplied
CurrencyGBP
Average employees1
DormantNo
Period start1 July 2024
Audit statusNot supplied
Accounting standardNot supplied
Profit before tax
−£191,192
Profit after tax
−£237,588
Fixed assets
£85,785
Net assets
£1,632,010
Current assets
£9,134,185
Current liabilities
£7,447,960
Total assets less current liabilities
£1,772,010
Cash at bank
£128,565
Equity
£1,632,010
i

Figures are taken from company-filed iXBRL/XBRL. Coverage is limited to electronic filings in the imported Companies House batch. Missing figures do not mean zero, and values have not been audited by BritDB.

Earlier imported periods (1)
  1. Accounts£1,869,598 net assets

04 Public procurement

Contracts Finder awards

Exact GB-COH links
active · 31 March 2026

HVE DevTest Infrastructure Platform

Home Office · ocds-b5fd17-9da7f5bb-fc0f-4953-b686-9ed83807c6ba

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£726,189
Contract period
31 March 2026 – 1 November 2030
Published
29 April 2026
Procedure
Call-off from a framework agreement
Main CPV
44316400
Source release ID
ocds-b5fd17-9da7f5bb-fc0f-4953-b686-9ed83807c6ba-2026-04-29T16:59:57+01:00
active · 3 February 2026

PNC 103

Home Office · ocds-b5fd17-c04114c0-9150-4245-9933-a6bf0f72a986

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£100,000
Contract period
3 February 2026 – 2 February 2027
Published
18 March 2026
Procedure
Single tender action (below threshold)
Main CPV
51611100
Source release ID
ocds-b5fd17-c04114c0-9150-4245-9933-a6bf0f72a986-2026-03-18T13:13:00Z
active · 29 December 2025

NENC ICB GP IT Capital - Printers

NHS SOUTH, CENTRAL AND WEST COMMISSIONING SUPPORT UNIT · ocds-b5fd17-8b292ba8-bfc8-4857-94a2-18be526c02f0

Supplier named in award
Desk Top Publishing Micro Systems Limited
Award value
£101,655
Contract period
31 January 2026 – 30 January 2027
Published
16 January 2026
Procedure
Call-off from a framework agreement
Main CPV
30232100
Source release ID
ocds-b5fd17-8b292ba8-bfc8-4857-94a2-18be526c02f0-2026-01-16T08:49:28Z
active · 15 May 2025

HP Computer Equipment - for summer refresh 2025

UNIVERSITY OF THE WEST OF ENGLAND · ocds-b5fd17-66d39b5f-f25c-49a6-b489-a435c5dbbb28

Supplier named in award
Desk Top Publishing (DTP)
Award value
£676,085.40
Contract period
16 May 2025 – 3 June 2025
Published
1 July 2025
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-66d39b5f-f25c-49a6-b489-a435c5dbbb28-2025-07-01T14:57:38+01:00
active · 18 March 2025

PNC 084 Printers and Print Support

Home Office · ocds-b5fd17-9b288fa5-02c9-401c-9f0b-5e9af6692d9e

Supplier named in award
Desk Top Publishing Micro Systems Limited
Award value
£59,110
Contract period
18 March 2025 – 31 March 2030
Published
10 April 2025
Procedure
Call-off from a framework agreement
Main CPV
30232150
Source release ID
ocds-b5fd17-9b288fa5-02c9-401c-9f0b-5e9af6692d9e-2025-04-10T15:16:28+01:00
active · 9 October 2024

UWE P4 Spec EB 630 900X7AV HP EliteBook 630 G11: Win 11 PRO / 16GB RAM / 256GB SSD / 3YR NBD CP (Including 3-year Proactive Insights licence) as per Desktops and Notebooks (NDNA) Framework (ITS5071 LU)

University Of The West Of England · ocds-b5fd17-9e157b9b-9ab3-419e-ac03-72df80839fa7

Supplier named in award
Desk Top Publishing (DTP)
Award value
£256,887.50
Contract period
10 October 2024 – 11 October 2024
Published
28 October 2024
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-9e157b9b-9ab3-419e-ac03-72df80839fa7-2024-10-28T14:46:24Z
active · 19 June 2024

HP Computer Equipment - 38x AIOs for summer refresh 2024

University Of The West Of England · ocds-b5fd17-ee93e2c2-a568-4f3e-8f3a-ff1408fd924f

Supplier named in award
Desk Top Publishing (DTP)
Award value
£43,267.18
Contract period
20 June 2024 – 21 June 2024
Published
4 February 2025
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-ee93e2c2-a568-4f3e-8f3a-ff1408fd924f-2025-02-04T11:33:34Z
active · 11 April 2024

HP Computer Equipment

University Of The West Of England · ocds-b5fd17-8026ece3-960c-4bb6-8905-19256e2ee778

Supplier named in award
Desk Top Publishing (DTP)
Award value
£868,033.64
Contract period
12 April 2024 – 13 April 2024
Published
4 February 2025
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-8026ece3-960c-4bb6-8905-19256e2ee778-2025-02-04T08:32:29Z
active · 19 March 2024

1743 IT Hardware for NHS Derby & Derbyshire ICB

NHS ARDEN AND GREATER EAST MIDLANDS COMMISSIONING SUPPORT UNIT · ocds-b5fd17-dcb7c1d3-bdd6-4a13-81bb-35eb7139b9b7

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£210,120
Contract period
1 April 2024 – 31 March 2027
Published
22 May 2024
Procedure
Call-off from a framework agreement
Main CPV
30212000
Source release ID
ocds-b5fd17-dcb7c1d3-bdd6-4a13-81bb-35eb7139b9b7-2024-05-22T16:10:38+01:00
active · 4 October 2023

Computer (workstation)

University Of The West Of England · ocds-b5fd17-84f017cd-f9b0-4560-b1b0-a561442c44dc

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£156,353.75
Contract period
5 October 2023 – 6 October 2023
Published
22 October 2024
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-84f017cd-f9b0-4560-b1b0-a561442c44dc-2024-10-22T16:57:01+01:00
active · 3 October 2023

Computer (workstation)

University Of The West Of England · ocds-b5fd17-645eb581-79b2-4b16-b72d-75e67c74ce2b

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£44,672.50
Contract period
4 October 2023 – 5 October 2023
Published
10 November 2023
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-645eb581-79b2-4b16-b72d-75e67c74ce2b-2023-11-10T16:29:44Z
active · 25 September 2023

HP EliteBook(s)

University Of The West Of England · ocds-b5fd17-34bd282d-ab9e-410e-a320-7a24c875c5e3

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£166,594
Contract period
26 September 2023 – 27 September 2023
Published
10 November 2023
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-34bd282d-ab9e-410e-a320-7a24c875c5e3-2023-11-10T16:27:34Z
active · 8 August 2023

Monitors and Desktop computers

Coventry University · ocds-b5fd17-86e96c00-6f03-4402-81ce-cf8c42c9a01c

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£1,106,821.06
Contract period
8 August 2023 – 8 August 2024
Published
12 January 2024
Procedure
Call-off from a framework agreement
Main CPV
48000000
Source release ID
ocds-b5fd17-86e96c00-6f03-4402-81ce-cf8c42c9a01c-2024-01-12T17:59:35Z
active · 30 June 2023

Consumable Call Off Order

University Of The West Of England · ocds-b5fd17-c9811885-5d3b-4919-a7b7-c52f870046b5

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£203,005.18
Contract period
1 August 2023 – 31 July 2024
Published
29 September 2023
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-c9811885-5d3b-4919-a7b7-c52f870046b5-2023-09-29T17:04:56+01:00
active · 3 January 2023

4D0Q7AV - HP IDS UMA i5-1245U 630 G9 Base NB PC

University Of The West Of England · ocds-b5fd17-06702c33-bdf8-4db9-ae9d-5a4d7c35fc1c

Supplier named in award
Desk Top Publishing
Award value
£84,885
Contract period
4 January 2023 – 5 January 2023
Published
7 February 2023
Procedure
Call-off from a framework agreement
Main CPV
30213000
Source release ID
ocds-b5fd17-06702c33-bdf8-4db9-ae9d-5a4d7c35fc1c-2023-02-07T16:16:49Z
active · 12 December 2022

ICT ad-hoc Purchase of Desktop Devices not covered under Other Arrangements via the NHSSBS Digital Workplace: Hardware (Link 3) ref SBS10044 (ALL LOTS)

Durham County Council · ocds-b5fd17-d5246360-bd8b-42aa-a4ce-8ddf2b291f0c

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£0
Contract period
12 December 2022 – 31 December 2023
Published
13 February 2023
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-d5246360-bd8b-42aa-a4ce-8ddf2b291f0c-2023-02-13T12:43:39Z
active · 4 September 2022

HP EliteBook(s)

University Of The West Of England · ocds-b5fd17-e559da55-b3df-4df3-aad0-b54e4b13df3b

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£166,594
Contract period
5 September 2022 – 6 September 2022
Published
29 September 2023
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-e559da55-b3df-4df3-aad0-b54e4b13df3b-2023-09-29T17:10:07+01:00
active · 4 September 2022

Various IT items

University Of The West Of England · ocds-b5fd17-4cda55f3-24a8-4ff2-a091-70a3db8a7e53

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£203,005.18
Contract period
5 September 2022 – 6 September 2022
Published
10 October 2022
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-4cda55f3-24a8-4ff2-a091-70a3db8a7e53-2022-10-10T15:52:39+01:00
active · 8 July 2022

HP E Series Monitors & HP P Series Monitors

University Of The West Of England · ocds-b5fd17-e9a01c14-d2d5-456a-8158-ef9947f02f2c

Supplier named in award
THE DTP GROUP LTD
Award value
£57,605.48
Contract period
9 July 2022 – 10 July 2022
Published
19 August 2022
Procedure
Call-off from a framework agreement
Main CPV
33195100
Source release ID
ocds-b5fd17-e9a01c14-d2d5-456a-8158-ef9947f02f2c-2022-08-19T13:17:10+01:00
active · 6 July 2022

200 HP E Series Monitor & HP Zbook Studio PC

University Of The West Of England · ocds-b5fd17-686b6ce0-8e0a-48be-9162-48a0801bb395

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£57,535.40
Contract period
7 July 2022 – 8 July 2022
Published
20 July 2022
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-686b6ce0-8e0a-48be-9162-48a0801bb395-2022-07-20T16:00:52+01:00
active · 22 May 2022

HP Computer Equipment

University Of The West Of England · ocds-b5fd17-e7c798ff-9ff8-4ed2-9459-ffecd210ec26

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£52,081.90
Contract period
23 May 2022 – 24 May 2022
Published
7 June 2022
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-e7c798ff-9ff8-4ed2-9459-ffecd210ec26-2022-06-07T11:42:15+01:00
active · 15 February 2022

Various IT Equipment

University Of The West Of England · ocds-b5fd17-eaf7d380-39a1-4611-ab64-4b4558cc6bd1

Supplier named in award
Desk Top Publishing (DTP)
Award value
£527,532.72
Contract period
16 February 2022 – 17 February 2022
Published
8 April 2022
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-eaf7d380-39a1-4611-ab64-4b4558cc6bd1-2022-04-08T15:06:30+01:00
active · 24 January 2022

HP EliteOne 800 G8 24 AiO BU

University Of The West Of England · ocds-b5fd17-685289a3-74de-40cf-8138-2ad91303b67b

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£68,139.20
Contract period
25 January 2022 – 26 January 2022
Published
28 March 2022
Procedure
Call-off from a framework agreement
Main CPV
30213000
Source release ID
ocds-b5fd17-685289a3-74de-40cf-8138-2ad91303b67b-2022-03-28T10:15:55+01:00
active · 7 January 2022

26D48AV - HP IDS UMA i5-1145G7 830 G8 Base NB PC (x270)

University Of The West Of England · ocds-b5fd17-e0086f4d-340a-434d-bef9-e46ba8b7a0c3

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£234,179.10
Contract period
8 January 2022 – 9 January 2022
Published
25 January 2022
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-e0086f4d-340a-434d-bef9-e46ba8b7a0c3-2022-01-25T15:21:25Z
active · 7 November 2021

HP IT Equipment

University Of The West Of England · ocds-b5fd17-d2ed49f7-bd9d-49fe-8c49-070c50eef229

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£370,606.62
Contract period
8 November 2021 – 16 December 2021
Published
6 January 2022
Procedure
Call-off from a framework agreement
Main CPV
30213000
Source release ID
ocds-b5fd17-d2ed49f7-bd9d-49fe-8c49-070c50eef229-2022-01-06T11:55:35Z
active · 18 August 2021

Order for Print Managed Service

University Of The West Of England · ocds-b5fd17-92ef8b6a-3e6a-4b79-b5a9-17faeaf42eb9

Supplier named in award
Desk Top Publishing
Award value
£80,000
Contract period
19 August 2021 – 20 August 2021
Published
13 October 2021
Procedure
Call-off from a framework agreement
Main CPV
30197000
Source release ID
ocds-b5fd17-92ef8b6a-3e6a-4b79-b5a9-17faeaf42eb9-2021-10-13T13:41:05+01:00
active · 21 July 2021

HP IT Equipment

University Of The West Of England · ocds-b5fd17-fa474ec7-8e82-42d3-b5cf-148dbf67ff00

Supplier named in award
Desk Top Publishing
Award value
£721,471.30
Contract period
22 July 2021 – 23 July 2021
Published
13 October 2021
Procedure
Call-off from a framework agreement
Main CPV
30213000
Source release ID
ocds-b5fd17-fa474ec7-8e82-42d3-b5cf-148dbf67ff00-2021-10-13T13:35:21+01:00
active · 20 July 2021

26D48AV HP IDS UMA i5-1145G7 830 G8 Base NB PC & HP Z1 TWR G5 9LM89EA#ABU RCTO Z1 Tower G5 Entry WKS / Win10p64 / i7 9700 3.0 2666MHz 12M 65W & HP EliteBook 830 - 113X7ET - UMA i5-10210U 830 G7 / 13.3 FHD AG UWVA 250 HD + IR bent / 8GB 1D DDR4 2666 / 256GB PCIe NVMe - Windows 10 Pro 64 / 3yw / 720p IR / Clickpad Backlit Premium Keyboard Intel Wi-Fi 6 AX201 ax 2x2 MU-MIMO nvP +BT 5 / Active Smart

University Of The West Of England · ocds-b5fd17-1cd4b7eb-e844-4c04-b955-1193a6d60719

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£318,120.86
Contract period
21 July 2021 – 22 July 2021
Published
26 August 2021
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-1cd4b7eb-e844-4c04-b955-1193a6d60719-2021-08-26T12:08:57+01:00
active · 29 June 2021

Provision of Notebooks

MANCHESTER METROPOLITAN UNIVERSITY · ocds-b5fd17-78c4421e-a0fc-4913-8fb9-8a722c18cadf

Supplier named in award
THE DTP GROUP LTD
Award value
£1,800,000
Contract period
19 July 2021 – 18 July 2022
Published
14 July 2021
Procedure
Call-off from a framework agreement
Main CPV
30200000
Source release ID
ocds-b5fd17-78c4421e-a0fc-4913-8fb9-8a722c18cadf-2021-07-14T14:52:07+01:00
active · 17 June 2021

8WY18AV - HP EliteDesk 800 G6 Desktop Mini Base Unit -35W IDS. Framework reference: ITS5042 LU

University Of The West Of England · ocds-b5fd17-bae9aff7-0c69-47f3-aad9-cedb5c7a20f1

Supplier named in award
DESK TOP PUBLISHING MICRO SYSTEMS LIMITED
Award value
£76,393
Contract period
18 June 2021 – 19 June 2021
Published
26 August 2021
Procedure
Call-off from a framework agreement
Main CPV
30000000
Source release ID
ocds-b5fd17-bae9aff7-0c69-47f3-aad9-cedb5c7a20f1-2021-08-26T10:57:08+01:00
i

The supplier link is exact, but the award remains buyer-published procurement data. BritDB requires the GB-COH identifier supplied in the Contracts Finder OCDS release and does not infer suppliers from similar names.

05 Ownership and control

People with significant control

Snapshot 5 October 2026
Current records1
Ceased records0
PSC source and official link →
IndividualCurrent

Mr Howard James HallSee 2 companies with this PSC name →

  • Owns 75% or more of shares
Nationality
British
Country of residence
England
Notified
6 April 2016
Identity verification details
  • Appointment Verification End On: 9999-12-31T00:00:00Z
  • Appointment Verification Start On: 2026-05-20T00:00:00Z
i

PSC records are company-filed public-register information. When the exact same displayed individual name occurs at multiple companies, BritDB offers a non-indexed cross-reference page. It is a name match only, not proof that the records describe the same person. Service addresses and partial dates of birth are deliberately omitted.

06 Charity register

Charity Commission links

Snapshot 29 September 2026
CCEW

No exact company-number link in this snapshot

The Charity Commission extract did not explicitly associate this Companies House number with a charity. BritDB does not use a name-only match to fill the gap.

i

This company-level check covers the Charity Commission for England and Wales. Links are accepted only when the official extract supplies this exact company registration number. Scottish charities now have separate OSCR profiles, but OSCR’s bulk fields do not provide a Companies House number, so BritDB does not infer a company link.

07 Northern Ireland charity register

CCNI exact company links

Snapshot 29 September 2026
CCNI

No unambiguous company-number link found

The CCNI source number did not resolve uniquely to this Companies House record. BritDB did not use a name or address match.

i

CCNI publishes company numbers without a jurisdiction prefix. BritDB links only when the plausible padded UK and NI candidates resolve to exactly one Companies House company.

08 Sanctions screening

UK Sanctions List

Report 8 October 2026
UKSL

No exact business-registration-number link found

The imported UK Sanctions List did not supply this Companies House number as a UK-linked business identifier. BritDB did not attempt a name-only match.

!

No exact link is not sanctions clearance. UK restrictions can apply through ownership or control even where an entity is not separately named. Always use the current official list and obtain appropriate advice for a legally significant decision.

09 Public procurement

Find a Tender links

Snapshot 29 September 2026
i

These links use only the GB-COH identifier supplied in the procurement record. A company may have other public-sector work that is absent, older, below publication thresholds or published without a Companies House identifier.

10 Environmental register

Environment Agency waste registrations

Snapshot 29 September 2026
i

This is a privacy-reduced, exact-company subset. The full official register also includes sole traders and applicants without a matching Companies House number. Check the current Environment Agency register before relying on registration status.

11 Nature of business

Standard Industrial Classification

SIC 2007

12 Connected public record

Checks beyond the company register

Partial coverage
CCEW

Charity Commission

0 exact company-number links.

Checked
CCNI

Northern Ireland charities

0 unambiguous company-number links.

Checked
FTS

Public contracts

10 procurement processes linked by exact GB-COH identifier.

Checked
EA

Waste register

1 exact company-number registration.

Checked
GZ

Corporate notices

The Gazette is not yet connected.

Not checked
UKSL

UK Sanctions List

No exact business-registration-number link in this report.

Checked
!

A checked source with no exact link is not a clean bill of health. Unchecked sources remain unknown, while sanctions may also apply through ownership or control of a listed person or entity.

13 Record timeline

Dates in the bulk record

3 events
  1. Confirmation statement

    Latest confirmation statement made up to this date

  2. Accounts

    Latest accounts made up to this date

  3. Incorporation

    Company incorporated

14 Provenance

Sources for this profile

9 sources

Companies House, Charity Commission, OSCR and UK Sanctions List information is public-register data. BritDB reproduces and organises it with source-specific limits; official external links are kept on the dedicated source pages.