The Princess Margaret Hospital
Independent hospitalOsborne Road, Windsor, SL4 3SJ · Run by Circle Health Group Limited · 01753743434 · Website
Acute hospital - Independent non-specialist
CQC rating published 3 May 2019 — this rating applies to this specific location. About this data
View the full CQC report & inspection history →
Contains public sector information from the Care Quality Commission, licensed under the Open Government Licence v3.0.
The Princess Margaret Hospitalis an independent (private-sector) hospital, regulated by the Care Quality Commission. It is shown on its own, separately from NHS hospitals — the CQC rates independent and NHS providers on the same five inspection questions, but this hospital's private-pay activity and outcomes are not published anywhere, so the two sectors are never ranked together. A minority of independent hospitals, including some run by this provider, also carry out NHS-funded work — where NHS England publishes that separately under the hospital's own NHS provider code, we show it further down this page, clearly marked as NHS-funded activity only. See methodology.
CQC inspection ratings
The Care Quality Commission rates hospitals on five questions. This location was last inspected November 2018. Source: CQC. About CQC ratings
CQC ratings by service
CQC rated these services individually — there is no single overall rating for this location.
Source: CQC. About CQC ratings
NHS-funded activity
The Princess Margaret Hospital also carries out NHS-funded treatment. NHS England separately publishes waiting times and patient outcomes for that NHS-funded work, matched to this hospital via its own NHS provider (ODS) code. NHS-funded activity only— this hospital's private-pay (self-pay/insured) work is not shown here or anywhere on this site.
NHS-funded waiting times
Data: May 2026 · NHS-funded activity only — The Princess Margaret Hospitalalso carries out private-pay work, which is not shown here or anywhere on this site (see methodology).
NHS-funded waiting times by specialty
| Specialty | Waiting | Within 18 wks | Median wait | 9 in 10 wait under | 52+ wks | 65+ wks | 78+ wks |
|---|---|---|---|---|---|---|---|
| Trauma and Orthopaedic | 35 | 80.0% | 8.6 wks | 23.2 wks | 0 | 0 | 0 |
| Gastroenterology | 11 | 100.0% | 1.8 wks | 9.1 wks | 0 | 0 | 0 |
| Other - Others | 3 | 100.0% | 3.3 wks | 3.9 wks | 0 | 0 | 0 |
Source: NHS England Referral to Treatment statistics, filtered to this hospital's own NHS provider code. About this data
NHS-funded activity only — the outcomes below cover only this hospital's NHS-funded hip & knee replacements, not its private-pay caseload.
Hip & knee replacement — patient outcomes (PROMs)
Financial year 2024-25(finalised) · patients having a primary hip or knee replacement voluntarily score their health before and after surgery. The average gain shown is adjusted for differences between patients (case-mix) — it is not a raw before/after difference and not a ranking, so read it alongside the patient numbers.
Source: NHS England PROMs (hip & knee replacement). About this data
Source: NHS England Referral to Treatment statistics and PROMs. About this data
About this data
The rating on this page comes from the Care Quality Commission's directory and Syndication API — the same source used for NHS hospital pages on this site. We do not hold this hospital's private-pay volumes, fees, waiting times, PROMs or safety data (that data is licensed separately by the Private Healthcare Information Network and is not available under an open licence). NHS England separately publishes this hospital's own NHS-funded RTT waiting-time and PROMs activity, matched via its NHS provider code — shown above, clearly marked as NHS-funded activity only. Read the full methodology.