We were obviously in the lounge at LBA at the same time; the only difference is that as we were ending our travels at LHR we didn't have to go back out to check-in - they brought our new BPs for the next flight to us in the lounge. The lounge staff were being very strict about the three hour stay limit for those who had paid to go in. A lady next to us who was trying to get to Vilnius had to pay for a second session.