UK-visible control · private-equity firm

Partners Group

UK companies whose Companies House control chain resolves to Partners Group, via 115 matched control vehicles. Two views: every company where the firm is a significant-control PSC, and the narrower set it majority-controls.

Partners Group is a Swiss-based global private markets investment firm, founded in 1996 and headquartered in Baar, Switzerland. It invests across private equity, private infrastructure, private real estate, private credit and royalties, and says it has invested more than USD 261 billion on behalf of clients globally.

External profile · [1] [2] [3] [4]

Majority control

≥50% shares/votes or board control

£1.0bn

turnover · full accounts of controlled companies

Companies: 78
Employees: 17,364
PBT: £-76m

All disclosed control

incl. minority (≥25%) PSC stakes

£1.1bn

turnover · 2,310 companies

Employees: 17,535
With accounts: 8 (0%)

Control structure

Majority control · top platforms by turnover · 78 companies controlled in total

Partners Group
- 75–100% INTERNATIONAL SCHOOLS PARTNERSHIP LIMITED £855m · 17,140 staff
  - 75–100% ISPSL 2031 LIMITED
  - 75–100% PIL MIDDLE EAST HOLDINGS LIMITED
  - 75–100% ISP CHILE LIMITED
  - 75–100% PIL MEXICO HOLDINGS 1 LIMITED
  - +15 more controlled
- 75–100% PARTNERS GROUP (UK) LIMITED £146m · 171 staff
- 75–100% PARTNERS GROUP (UK) MANAGEMENT LTD £21m
- 75–100% FORTERRO UK LTD £17m · 33 staff
  - 75–100% FORTERRO UK ORDERWISE LIMITED
  - 75–100% FORTERRO UK 123 INSIGHT LIMITED
  - 75–100% WISE ROBOTICS (UK) LIMITED
  - +2 more controlled
- 75–100% IONTAS LIMITED £3m · 20 staff

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 · 6 have filed accounts

Company	PSC control	Turnover	PBT	Emp.
INTERNATIONAL SCHOOLS PARTNERSHIP LIMITED controlled directly · every link ≥75%	75–100%	£855m	£-132m	17,140
PARTNERS GROUP (UK) LIMITED controlled directly · every link ≥75%	75–100%	£146m	£64m	171
PARTNERS GROUP (UK) MANAGEMENT LTD controlled directly · every link ≥75%	75–100%	£21m	£941,686	—
FORTERRO UK LTD controlled via 2 hops · every link ≥50%	75–100%	£17m	£-9m	33
IONTAS LIMITED controlled via 7 hops · every link ≥75%	75–100%	£3m	£-756,476	20

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 Partners Group'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 6 of 78 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.