Endoscopic Ultrasound 
Amyn Haji offers both 3D endoanal and endorectal ultrasound. 
In addition, he is an international expert in high frequency mini probe ultrasound in the colon which means that patients can have a colonoscopy and ultrasound at the same time without the need for an additional visit. His research in 2008 investigated this and since then he has led the service at King's College Hospital, London.