DIPLOMA PLC
Company number 03899848 · Monitor this company
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Overview
- Company type
- Public Limited Company
- Incorporated
- 1999-12-24
- Registered office
- 10-11 Charterhouse Square, London, England, EC1M 6EE
- Postcode
- EC1M 6EE
- Capital
- 6 GBP
- Accounts category
- Group
Accounts
- Last made up to
- 2025-09-30
- Next due by
- 2027-03-31
- Financial year end
- 30 September
Confirmation statement
- Last statement dated
- 2025-12-22
- Next due by
- 2027-01-05
Nature of business (SIC)
- 70100 Activities of head offices
Officers 12 current · 25 resigned
Group structure 2 subsidiaries
From persons-with-significant-control filings on the public register.
Modern slavery statement
Registered a modern slavery statement for 2026 (period to 2025-09-30) — 6 years on the registry.
Read the statement summary on the government modern slavery statement registry. Contains public sector information licensed under the Open Government Licence v3.0.
Contact details
- Website
- diplomaplc.com
- Phone
- +44 2075495700
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.
Previous company names
| Name | Date changed |
|---|---|
| NEW DIPLOMA PLC | 2000-04-17 |
| MERGESECTOR PUBLIC LIMITED COMPANY | 2000-02-22 |
Previous registered addresses 4
| Address | Changed on |
|---|---|
| 20 BUNHILL ROW, LONDON, EC1Y 8UD | 2007-07-19 |
| BUNHILL ROW, LONDON, EC1Y 8UD | 2007-07-19 |
| MITCHELL LANE, BRISTOL, AVON BS1 6BZ | 2000-02-08 |
| 1 MITCHELL LANE, BRISTOL, AVON BS1 6BZ | 2000-02-08 |
Among its peers
Among the oldest 25%
of 1,689 similar companies in EC, trading since 1999
The class of 1999
43%
of the 1,021 companies in this sector incorporated in 1999 are still active today; 56% have since been dissolved.
A fact about the year, not a forecast for this company.