UK-visible control · private-equity firm

Permira

UK companies whose Companies House control chain resolves to Permira, via 13 matched control vehicles. Two views: every company where the firm is a significant-control PSC, and the narrower set it majority-controls.

Permira is a London-headquartered global private equity and credit investment firm. It was founded in 1985, originally as Schroder Ventures, and focuses on buyout, growth equity and credit investments in technology, consumer, healthcare and services. The firm says it has total committed capital of over €89 billion and 15 offices across Europe, the United States, the Middle East and Asia.

External profile · [1] [2] [3] [4]

Majority control

≥50% shares/votes or board control

£682m

turnover · full accounts of controlled companies

Companies: 112
Employees: 2,098
PBT: £229m

All disclosed control

incl. minority (≥25%) PSC stakes

£682m

turnover · 117 companies

Employees: 2,098
With accounts: 13 (11%)

Control structure

Majority control · top platforms by turnover · 112 companies controlled in total

Permira
- 75–100% BIO PRODUCTS LABORATORY LIMITED £471m · 1,072 staff
- 75–100% ERGOMED GROUP LIMITED £61m · 74 staff
  - 75–100% PRIMEVIGILANCE LIMITED
  - 75–100% ERGOMED CLINICAL RESEARCH LIMITED
  - 75–100% HAEMOSTATIX LIMITED
  - 75–100% ERGOMED US HOLDINGS LIMITED
  - +2 more controlled
- 75–100% PERMIRA CREDIT LIMITED £55m · 78 staff
- 75–100% THE KEY SUPPORT SERVICES LIMITED £54m · 419 staff
- 75–100% ASPIRE TOPCO LIMITED £42m · 455 staff
  - 75–100% ASPIRE HOLDCO LIMITED
- 75–100% MIMECAST UK LIMITED —
  - 75–100% MIMECAST SERVICES LIMITED
  - +2 more controlled

Platforms are the firm's accounts-filing holdings; figures are their (consolidated) turnover. Subsidiaries beneath them are already inside that total — shown for structure, not added again.

Largest UK holdings (2026)

Majority control · by turnover · 13 have filed accounts

Company	PSC control	Turnover	PBT	Emp.
BIO PRODUCTS LABORATORY LIMITED controlled via 5 hops · every link ≥75%	75–100%	£471m	£93m	1,072
ERGOMED GROUP LIMITED controlled via 7 hops · every link ≥75%	75–100%	£61m	£24m	74
PERMIRA CREDIT LIMITED controlled directly · every link ≥75%	75–100%	£55m	£3m	78
THE KEY SUPPORT SERVICES LIMITED controlled via 8 hops · every link ≥75%	75–100%	£54m	£982,719	419
ASPIRE TOPCO LIMITED controlled via 5 hops · every link ≥75%	75–100%	£42m	£-4m	455
MIMECAST UK LIMITED controlled via 5 hops · every link ≥75%	75–100%	—	£112m	—

How this is built — and its limits

Control, not ownership. PSC filings disclose significant control (≥25% shares/votes, board rights, significant influence) — not economic ownership. We never assert a cap table.
"PSC control" is a band, not an exact stake. Companies House discloses control only in ranges (25–50%, 50–75%, 75–100%), and we show the stronger of the share or voting band on the holding's nearest disclosed edge — the firm's own stake for directly-held companies, the immediate intermediate's for those held through a chain. A band below 50% (or a blank —) here means control rests on board-appointment rights or significant influence rather than a majority shareholding — common in PE structures.
Every holding is chain-verified. The line under each company ("controlled via N hops · every link ≥X%") is the shortest PSC control chain we found from Permira's vehicles down to it — each hop a real Companies House disclosure. Where a company is also controlled by another tracked firm, that's flagged inline.
Full accounts, not apportioned. A controlled company's figures are counted in full, not scaled by stake. A jointly-controlled asset counts fully under each controller.
No double-counting. Where a consolidated parent and its subsidiaries both file, only the topmost is counted.
Coverage is a floor. Only 13 of 112 majority-controlled companies file detailed accounts in our enriched set, so totals understate the true portfolio.
UK-visible only. Chains that exit to Jersey, Guernsey or other registries terminate there — we can't follow beyond the UK.