Night of the Big Heat
Christopher Lee, Patrick Allen, Peter Cushing, Jane Merrow, Sarah Lawson, William Lucas, Kenneth Cope, Percy Herbert, Thomas Heathcote, Anna Turner, Jack Bligh, Sydney Bromley, Barry Halliday
5.7 from IMDB
While mainland Britain shivers in deepest winter, the northern island of Fara bakes in the nineties, and the boys at the Met station have no more idea what is going on than the regulars at the Swan. Only a stand-offish visting scientist realizes space aliens are to blame.