I have done a little digging - His full name is Mr Chandrasiri Abrew he is a vascular surgeon and also does private work at the Spire Hospital, Little Aston where Mr Khan also does his private work.
 
I have copied this from their website
 
Background Information 
Professional profile:
 
Mr Abrew is a General & Vascular Surgeon and his NHS base is Walsall Manor Hospital. He was a Consultant Surgeon in Pembrokeshire and Derwent NHS Trust and was Lead Clinician in Surgery. His clinical interests include arterial surgery, venous disorders and cosmetic treatment of varicose veins.
Mr Abrew has trained in surgery in North Wales, Romford and Bournemouth. His practical experience in arterial surgery was gained at the nationally renowned Vascular Unit at Royal Bournemouth Hospital.
He is a General Surgeon, provides a comprehensive service on surgical emergencies, hernia repair, haemorrhoids etc.
 
Personal profile:     I am married with two children. I enjoy travelling, gardening and passionately follow global cricketing events. 
 
Year of first medical qualification:    1976
 
Specialties:
Special clinical interests:    Aortic aneursm surgery, distal reconstructions, chronic venous disease and cosmetic treatment of varicose veins 
 
Research interests:    Chronic venous diseases 
 
Current NHS and /or university posts:   Walsall Manor Hospital 
 
As I said just give them a quick call and make sure you have been reffered to the right department.