I wouldn't be getting young pigs now, Goldcraig. The wet cold mud creates a lot of work and risk. Even with a nice warm, dry shelter, they bring the wet cold mud in on their bodies and pretty soon their warm dry straw is also wet and cold and they can get a chill very quickly. (Ask me how I know

)
I recently got some weaners (they're doing really well Karen

) but they're that wee bit older - they're 3 months now - plus I have a lovely dry byre they can come into at night and there's enough space for them that they can stay in all day if the weather is really evil. We've done it this way before with June-born weaners and we know it works - but I wouldn't do it with younger piglets unless I had accommodation I was happy for them to be in all winter. (My own litter had the bull pen last year, and a big round bale of hay to burrow into - they were so content! But I wouldn't have wanted those September-born little 'uns to have had to be outside at their size.)
So, as everyone else has said, best wait till spring. Sorry.