No they don`t. Only Brits do, cause they think they are superior in every which way of life.... In fact, some dialects spoken by UK ATC are very, very hard to understand for people not from the UK. Try Scottish control or some of the east enders working in London...(Shanwick?)....horrible.
The best in Europe are the Dutch, hands down. AMS in rush hour - thats brilliant ATC for you.
Dudeness...horsepoo, AMS are ok, but LHR are far far better, and I'm not a Brit.
BCN is a clusterfcuk and is an accident waiting to happen, its a metaphor for the rest of Spanish ATC, tarring them all with the same brush? yep you betcha.
I feel safer flying into Lagos or CDG than I do going into BCN or MAD.