Primary school nursery class or nursery

[holidaysoon]

Hi
Just hoping to get some ideas about the relative benefits of both of these. My ds is nearly 4 so is old for his year, all his nursery friends have moved off to school over the Summer and he is now in with a much younger lot and I'm worried that he's not going to get enough out of it however we both work full time so the need to juggle things for the before and after school hours would not be good. (I have looked in to childminders and not an option I'm happy with where we live currently) incidentally when can they go to school based nursery class from 9-3?
Thanks

Very few state schools do nursery hours from 9-3. They are mainly in very deprived areas. Private schools do usually.

wow speedy reply thanks. Thought it would be thus for the hours however in very shitty area of London so was wondering if it might be a school thing rather than an individual child thing. Did also wonder if they increased the hours as they got closer to reception but thinking about it logically now don't really see how they could.

Yes its a school thing. I know of a few in each borough Ive worked in that do full time. A freinds son in tower hamlets did 3 terms part time then 1 full time before reception as he was an October birthday.