With the longest runway at Blackpool being 1860m, the fees for a 747 would be massive as they would be parking over the fence at Pontins!
A B777 at Max Landing Weight would use about 1350m with maximum auto-brake. However, at this weight of 208tons, the runway simply isn't strong enough due to its low load bearing capability.
go around! is correct. The fees for a B777 would be massive but probably because of the subsequent repairs to the runway.
Unfortunately, it would have to depart from Rwy10 due to the limited turning pad on Rwy28, as a result 187 000lbs of thrust would probably blow Pontins into the Irish Sea!