I've been told 2 different things by 2 vets, could anyone tell me if its better to have 1st jabs at 6 weeks old or 8 weeks old please.

I would say 8 weeks myself, i'm sure it's about then that they loose their mothers immunity, feel free anyone to quote as i can't remeber but i'd still say eight weeks but i can't be certain about the immunity thing.

Warm regards Susan

Some quote 10 weeks, according to my vet the difference occurs when different make vaccines are used.  They have to follow the manufacturers instructions.