I think not.
Lets see he might do Ant & Dec presenting celebrity BGT, with Lord Sugar, Ross Kemp going on about being hard again, Kevin Webster on about his garage and son Jack again, then Ant & Dec with the phone numbers. I didn't find him funny at all tonight, it was just like the audition again.

He was good tonight but if he doesn't do a completely different mix of imitations he will get buzzed.

I think he knows he needs to do other voices. He'll be advised to as well.

His one drawback is that he has only done well known English characters so far (plus a stab at Louis Walsh).....you'd expect an impressionist to have a couple of Americans or other foreigners in there as well

I don't know, probably and hope so. Being an impressionist though it's hard D:

He only has to stand there and he can do Tom Hanks!

But thankfully he is not like John Culshaw who has to say who he is trying to impersonate in the first sentence so you know who it is

At least Les sounds like the person.