Cockneys and Mancs - horrid accents, no manners and domineering twa*s.
Don't mind the odd depressing Brummie accent, moaning about "the Villa" - we laugh at their Kevin Turvey down beat look on life.
Selfish c*nts waking everyone else up with shouting and/or banging in hotel corridors at any time of the night.
Hotels that don't provide enough sun umbrellas or similar.