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Diploma PLC
Diploma PLC is a value-add solutions group, providing critical products and services for a wide range of uses to customers across many different markets. The company’s own description of itself, taken from its website.
Active 26 years old · 1,681st oldest of 4,506 · incorporated in the 1990s
Registered office
10-11 CHARTERHOUSE SQUARE, LONDON, EC1M 6EE
Other PLCs registered in London
Online
Website www.diplomaplc.com
News and announcements on their own site
Found by searching for the company name and kept only where the domain matches it. Social accounts are listed only where the company links to them from its own site. Nothing here is supplied by the company to us.
Group structure
It is the immediate parent of 4 entities:
- DIPLOMA IBERIA HOLDINGS SL
- DIPLOMA OVERSEAS LIMITED
- DIPLOMA HOLDINGS PLC
- Techno-Path (Distribution) Limited
Ownership as recorded by GLEIF, the body that issues Legal Entity Identifiers. Unlike a shared registered office, these relationships are filed and validated, so they are evidence of a real corporate link.
Filing history
This company has 200 documents on its Companies House record. The most recent accounts were filed on 29/01/2026. Its last confirmation statement or annual return was filed on 31/12/2025.
The most recent filings
This is the list of documents filed, not their contents. A line saying accounts were filed records that they were filed and when; it says nothing about turnover, profit or assets, which are inside the documents themselves and are not published here. Read the filings on the Companies House record.
Who runs it
The register lists 11 current officers and 26 who have resigned.
Who controls it
The register shows no current person or entity with significant control for this company.
Charges
No charges are registered against this company.
Officers, controllers and charges are as recorded on the Companies House register on 13/10/2026, and the register changes daily. Appearing here is not an allegation about anyone. Read the current record on the Companies House record.
What it does
This page is compiled from the public register. Companies House does not verify the information filed with it, so treat everything here as what the company reported rather than as established fact. For filings, officers and charges, see the official Companies House record.
Also at EC1M 6EE
A shared registered office is not evidence of a relationship. Formation agents and genuine groups look identical on the register.
On the register
- 1,681st oldest of 4,506 PLCs
- One of the 1990s cohort
- Not in liquidation or facing strike off
There are 4,506 PLCs in Britain, under a tenth of one per cent of the register. The whole count.