In case this dandy tidbit of news hasn't reached the other side of the pond...
If you are arriving in the UK next Wednesday, 30 Nov, you can expect all of hell's clowns and dancers to be rampant at the major ports. It's possible that the knock-on effect could extend to Thursday/Friday.
They will be bringing in guvvies from the Post Office and what-not to do landing interviews and grant or refuse LTE.
Bring water, maybe a blanket, etc etc etc...