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Company profile

Diploma PLC

UK company 03899848, incorporated on 24 December 1999.

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Company number
03899848
Incorporated
24 Dec 1999
Companies House status
Active

Company identity

Founded / incorporated
24 December 1999

Company number 03899848

Verify at Companies House
Legal name
DIPLOMA PLC
Company type
Public Limited Company
Region
London
Registered address
10-11 CHARTERHOUSE SQUARE
LONDON
ENGLAND
EC1M 6EE
Insolvency history
No

Corporate ownership

Updated 07 Jul 2026 09:49

Controls 105
Diploma PLC
No active corporate controller recorded.

Company events

Reference milestones and recent Companies House filing stream events.

5 events
31 Mar
2027

Accounts due

Accounts Due

Next accounts due date

05 Jan
2027

Confirmation statement due

Confirmation Due

Next confirmation statement due date

22 Dec
2025

Confirmation statement filed

Confirmation

Last confirmation statement made up date

30 Sep
2025

Accounts filed

Accounts

Last accounts made up date

24 Dec
1999

Incorporated

Inception

Company registered at Companies House