Advanced window cleaning? Is good.
Sounds better than "Retarded window cleaning"!
There's already a national co. called "Advance Cleaning", also "Progressive cleaning". So you're ok there.
I don't know if the rules have changed but when I started out in 1991, the rules were that your own name had to form some part of the trading name. This does not apply to ltd companies. I realise that many people don't do this though. I'll check with my accountant sometime to see if that rule has been relaxed.
As long as you put on your tax forms "D.Morris, Trading as...." All is fine.
And you can use the same name as others, as long as you don't register or form Ltd. or use something like Nike or Virgin, they'll sue the pants off you.
Perhaps I should have a name change too!
How about..."Get back in the kitchen woman, this is the way I'm doing them from now on, Like it or lump it, posh cleaning services."
Bit long? What do you think? It's hard to know what to leave out as unimportant...