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UK company intelligence
Company Active PLC

Company profile

Diploma Holdings PLC

UK company 00256111, incorporated on 1 May 1931.

Diploma Holdings PLC is a UK company with status Active founded in 1931 based in London.

Company number
00256111
Incorporated
1 May 1931
Companies House status
Active

Company identity

Founded / incorporated
1 May 1931

Company number 00256111

Verify at Companies House
Legal name
DIPLOMA HOLDINGS 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

1 level 1 ultimate controller Controls 103
1
Company Active PLC
Diploma Holdings PLC
CRN 00256111
2
Direct and ultimate controller Active PLC
Diploma PLC
CRN 03899848

Company events

Reference milestones and recent Companies House filing stream events.

5 events
31 Mar
2027

Accounts due

Accounts Due

Next accounts due date

10 Mar
2027

Confirmation statement due

Confirmation Due

Next confirmation statement due date

24 Feb
2026

Confirmation statement filed

Confirmation

Last confirmation statement made up date

30 Sep
2025

Accounts filed

Accounts

Last accounts made up date

01 May
1931

Incorporated

Inception

Company registered at Companies House