Definitely Daphne's brothers. Such bad casting! One has a pseudo cockney accent ala Dick Van Dyke, one mumbles badly to disguise the actor's Scottish origins and the great Richard E Grant is as out of place as Niles and Frasier at The Timber Mill or Hoppy's Old Heildelberg.
They are meant to come from Manchester??
I love the show but find the references to British cuisine etc misrepresentative.
When Donny hides a basket of Daphne's fav English food in the park for her to find she mentions blood pudding (it's called black pudding in England) jellied eels ( No one eats jellied eels !! only a few old cockneys and they are rare and only in the east end of London) and so forth.
Oh and maybe the writers should have had Niles and Daphne happily together without all that protracted Mell nonsense. They spoiled it by dragging it out.