A lot of people go to Finsbury Park and go south on the tube towards Kings Cross on Matchdays. There are usually a lot of people going on the Picca/Vic lines and it can be half an hour before you squeeze your way into the station, let alone on to a train. HELPFUL HINT: If you go to the RAIL station, instead of the TUBE station (Walk up the stairs on the right) you can get a rail train from Finsbury to Kings Cross, with NO QUEUES at all to get on the train. This has saved me half an hour over getting the tube to Kings Cross. Use it well.
What would be even better: Everyone with a ticket gets a seat delivered to their house, with a built in jetpack, they fly to the emirates in the jetpack seat and land in the position that they're allocated.
There'll be quite a lot of aerial activity then much to the angst of the security services in respect of flying bodies over sensitive buildings in London