Ex-PM keeps appealing to the top people in the country (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

[David] CAMERON [ex PM] round U [appealing to the top people] I wasn’t aware of this spelling but find that it’s the French name, which seems rather perverse, since the U is not a crossing letter, but it allows Pasquale a witty surface