It is/was a Sub LLC of E*Trade pro called "Barkley." They are located @ Lexington @ 57th. I knew a few guys that did The ECN Rebate gig over there a few years ago. That is all I know, please do not pm me. surdo
Anymore info on Berkeley futures in London ? They seem to have wide offering in matter of markets and platforms but can't find the rates on their website.