21,500 non-conditional plus a further 2,500 only available with official club coach travel package. Total 24k per club = 48k.

Would just beat previous NL playoff final record and that's likely to be it. They have already increased the number of trains on Bakerloo line that afternoon and doubled the number / frequency on Chiltern line to/from Oxford / Birmingham etc. Police and tfl reckon 48k is the maximum the infrastructure can cope with, with Jubilee and Metropolitan lines out of action. From purely random observation Wembley Park would normally handle approx 2/3 of total passengers going by public transport. Likely to be a massive bottleneck queue to get into Wembley Central Station after the match. For safety reasons they will only allow a few hundred into the station at a time. Otherwise there's a danger of a Hillsborough type scenario, massive pressure from outside, with only relief point being for people to spill off the platforms onto the track.