Originally Posted by
deniah
i'd not gone through departure immigration, as i'd not gone through arrival immigration; i.e. had not entered india, nor used my one of my eligible visa entries
after exiting the inbound intnl craft , went through transfer desk, picked up onward BP, went through another mini-security and into departure hall
I have done this often at LHR T4. The only issue is you have to go back down a staircase marked do not enter to get back to exit area near the transfer desks. :-)