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Useful Information

For patients and visitors, visit St Mark's Hospital's NHS

The Inflammatory Bowel Disease Team

The Gastroenterologists (Medical Doctors)

Dr Ailsa Hart leads the IBC service and we are fortunate to have a large team of gastroenterologists:

Dr Ayesha Akbar, Dr Naila Arebi, Dr Chris Fraser, Dr Simon Gabe, Dr Adam Haycock , Dr Meron Jacyna, Dr Jeremy Nightingale, Dr Sharon O’Brien (Central Middlesex), Dr Max Pitcher Professor Brian Saunders, Dr Amar Sharif (Central Middlesex), Dr David Sherman (Central Middlesex), Dr Siwan Thomas-Gibson.

Our paediatric IBD service is growing and Dr Warren Hyer (Consultant Paediatrician) continues to expand the service in conjunction with the Paediatric unit at Chelsea and Westminster Hospital. Dr Hyer works closely with Dr Hart, Dr Akbar and the IBD Specialist nursing team in dedicated adolescent clinics where the young patients can be assisted in a seamless transfer to adult services. 

The Colorectal Surgeons

Mr Janindra Warusavitarne leads the surgical IBD services with his consultant colleagues:

Mr Stephen Chadwick, Professor Sue Clark, Mr Ian Jenkins, Professor Robin Kennedy, Mr Peter McDonald, Professor John Northover, Professor Robin Philips and Miss Carolynne Vaizey

Our surgeons are highly experienced in performing operations using keyhole surgery techniques and have developed an Enhanced Recovery Programme. In addition to this, they also perform open surgery when appropriate.

We understand that contemplating surgery can be a daunting time. When surgery is first discussed you will be advised to have a consultation with one of our highly experienced surgeons. The purpose of this appointment is to ensure that you have a clear understanding of the surgical options that may be available to you. This is also an ideal time to have any questions you may have answered.

IBD Specialist Nurse (0208 235 4155)

Marian O’Connor leads the IBD Nursing team with Tracey Tyrrell and Hannah Middleton, both IBD Specialist Nurses.

The IBD nursing team should be your first point of contact if you require any advice regarding your disease. In particular they can provide support, advice and information on your inflammatory bowel condition.

The advice line (0208 235 4155) is run by the IBD nurses and we encourage you to leave a message if you have any query relating to your disease, and especially if you are becoming unwell. The IBD nurses can assess you, advise over the phone and as appropriate make an appointment for you to be seen by a doctor in the outpatient department. You can access the advice line during week days (except Wednesdays), but it is important to remember that if you are very unwell you should seek alternative advice via your GP or local accident and emergency department, as it may be more than 24hrs before your call is returned.

The IBD Nursing team are also available for booked clinic appointments in the out-patient department, which can be particularly helpful to those who have had a recent diagnosis of IBD. Many medications used for the treatment for IBD require regular blood tests, and if you are having difficulty organising this with your GP, you can contact us to discuss this.

The IBD day unit is located on level 4 of St Mark’s Hospital. Treatments such as Infliximab, Adalimumab, Methotrexate & intravenous iron therapies are administered by the IBD Nursing team.


There is a large nutrition and dietetics team within the Trust. They are available (by referral) to offer support, guidance and information regarding nutritional aspects of your disease. Your doctor or nurse may discuss dietetic support with you and will make a referral to a member of the team if they think it appropriate.

Stoma Care (0208 234 4110)

The stoma and pouch clinical nurse specialist team is led by Angela Vuhnovish, based at St Mark's & Northwick
Park Hospital. The Stoma and pouch nurses will see patients in hospital, prior to surgery and offer support and guidance throughout the process. The team also provides on-going support to patients with a stoma, ileo-anal pouch and enterocutanoeus fistula. At Central Middlesex Hospital, the ward nursing team have access to advice for in-patients via the stoma care department. If appropriate a clinic appointment can be arranged in the out-patient department to see the stoma nurses.

For those patients that reside within the local area (Harrow Borough) there are several out-patient clinics. For those patients who reside outside the local area, you would need to contact your local stoma care department.
The service can be accessed Monday-Friday 0800-1700, on the following numbers (voicemail facilities available).

0208 235 4110 (all stoma care issues) 
0208 235 4126 (all ileo-anal pouch care issues)

Psychological Medicine Unit (PMU)

The St Mark’s Hospital PMU is headed by Dr Yorum Inspector (Consultant Psychiatrist), with Dr Esther Serrano-Ikkos and Ms Megan Virtue (Psychologists) as his consultant colleagues.

The Psychological Medicine Unit is ideally placed to offer psychological assessment and support to patients with gastrointestinal conditions. Following an initial assessment, you may be offered on-going therapy within the unit or locally (closer to home). It can sometimes be difficult to cope with aspects of living with a long-term condition or illness, and psychological support can be made available. If you feel that this service would be of benefit, please discuss a referral with your doctor or GP.

Mrs Breda Orrell is the administrator for the Unit and can be contacted on 0208 235 4017.

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