In my area of Dewsbury/Batley uk i know of: 1) Mufti Zubair Dudha sb. Runs khanqah called khanqah ashraifay akhtariya, has weekly majlis. few guys from europe took bayat last week after the euro-sunni programme. 2) Moulana Asif Khalifah Sb, holds majlis from his house and other places as well. 3) Moulana Farooq Raja Sb. Not sure if all khalifahs of shaikhs do bayat i know many are khalifah but not neccesarily shaykhs in tasawwuf and do bayah and majlis. my friend is bayat to and attends Mufti Zubair Sbs majlis i will ask him if he knows others in uk.