Active03899848Private limited companyLondon

DIPLOMA PLC

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

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Registered activity: Activities of head offices (SIC 70100). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

DIPLOMA PLC is an active private limited company (company number 03899848) incorporated on 24 December 1999, registered in London. Its registered activity is activities of head offices (SIC 70100). Accounts are on file at Companies House (group) but not yet parsed into this record.

There are 2,449 companies in activities of head offices in London with filed accounts; the median reports net assets of £796 and is 13 years old.

02

Key dates

Incorporated
24 December 199926 yrs ago
First accounts due
24 September 20019161 days overdue
Confirmation statement due
7 January 2027in 75 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

03

Activity

SIC 70100
Activities of head offices
Accounts type
Group
04

Financials

No accounts on record

Accounts exist on the register but their figures are not in this dataset yet.

05

Filing and accounts signals

Facts from the register · no rating
  • Incorporated five or more years agoIncorporated 24 December 1999
  • Accounts past their due dateDue 24 September 2001

Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.

06

Timeline

Newest first
  1. Confirmation statement duein 75 days
  2. First accounts due9161 days overdue
  3. Incorporated
07

Similar companies in London

Same activity (activities of head offices), closest in incorporation date
08

Reminders for DIPLOMA PLC

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Source: Companies House register, snapshot 2026-08-31. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.