I'm in NI, I have a 1m Aluminium offset dish, got it about 25 years ago, currently using an Inverto Black Ultra Twin LNB, best LNB I've had for feeds, any dish 1m or over will get most feeds, depends on the weather too, 1.2m would be better.
If you can get the 2 FTA racing feeds on Eutelsat 7°E - 11178 v 3674 & 11184 v 3674, (11178 is usually weaker) then you know your dish is set up properly, I can just about get these feeds today, (60% SQ on both), if it was raining I wouldn't get a signal.