we collect our new puppy on tuesday when should we take it to the vets for it vaccinations ?

I always recommend people take a new puppy to the vet within a day or two of getting it, for a basic check (for your own peace of mind to know that you haven't bought a sickly pup), and the vet will advise when the injections should start.

Same here, actually it's written in my contract that they have to take it for a check-up within 4 working days.  I do have mine checked a couple of days before they leave also but this is something that I advise on.

There are different ages that people accept.  Some vets do them from 8 weeks and upwards, speak to your vet and I'm sure they'll advise you properly.