If you don’t know the direct number for the person or department you wish to speak to, you can call our hospital switchboard on 020 8864 3232. This is an automated answering service. Please note that our switchboard is always very busy, so if you know the number of the person/department it is best to phone directly.

Some of the more frequently requested phone numbers at St Mark’s are detailed below:

St Mark’s Wards

Outpatients Department:  020 8963 8853
Gladstone 2:  020 8453 2027 or 020 8453 2029
Lennard Jones Intestinal Rehabilitation Unit on Roundwood Suite: 020 8453 2214 or 020 8453 2215
Wolfson Unit for Endoscopy Reception: 020 8235 4130 / 4131

St Mark’s Hospital Foundation

Please note we are unable to help with medical enquires:
020 8453 2346

Trustplus (private patients)

If you are a private patient, you can contact Trustplus; the private patient unit for St Mark’s, Northwick Park and Central Middlesex Hospitals.

Inpatients and Daycare Reservations: 020 8869 3099/3394. This line is monitored from 8am – 4pm.

Outpatients: 020 8869 3390 / 3112. This line is monitored from 8am – 7pm. For general enquiries, you can also email

Getting Here

St Mark’s the National Bowel Hospital, Central Middlesex, Acton Lane, London NW10 7NS

Click here for a map of the local area.

Tube and rail links: St Mark’s at Central Middlesex nearest Tube station is Harlseden, but it is a 15-20 minute walk away, but there are bus services across the road from the tube station which take you in the direction of the hospital, some of which stop on the Hospital site.

St Mark’s at Northwick Park Hospital, Watford Road, Harrow, Middlesex HA1 3UJ

Click here for a map of the local area, here for a map of Northwick Park and St Mark’s hospitals, and here for an internal map.

Tube and rail links: Northwick Park on the Metropolitan Line is the nearest Tube station, five minutes walk away. Kenton station, for Bakerloo and London Overground services, is about a 10-15 minute walk away.

Travelling between St Mark’s Hospital Central Middlesex and St Mark’s at Northwick Park.

There is no direct public transport link between our two main hospital sites but there a number of ways to make the journey by bus, rail or Underground. To find out which way is best for you, go to and use the journey Planner on the right hand side. Enter the following search details: From: NW10 7NS & To: HA1 3UJ


St Mark’s The National Bowel Hospital
Central Middlesex
Acton Lane
NW10 7NS