Bantams wanted - Ipswich area

[Lo]

Hi all

I'm looking for a couple of bantams. I have my eye on some light sussex's this time. However, because of the mareks we had last year we have been told that it's best to get chickens around 20 weeks (as they will have built their immunity up by then).

Can you help or do you know anyone that can. Pretty tricky age to buy but I don't really want to put any new chicks at risk.

Thanks
Lo