LGW-GLA. The set up is rather strange. ‘Priority’ is to get into the holding pen. Shortly before boarding a gate agent opened the doors and announced to those that could hear that there was a new system for boarding. She then walked away. This was followed by announcement that groups 1,2 and 3 could board. No~one checked BPs. Fortunately I was near the gate but I have no idea whether there was any control over the boarding. Looks like a fail.