Hi,
The way the Credit reference agencies here 'score' you does vary and currently, with the economic turmoil the whole country is facing, more and more people defaulting etc I'm sure they've 'tweaked' the way this happens. It's not public knowledge as such though, and if you ask them they'll probably deny anything or just say it's the same as it's always been.
That said, you can be 'linked' financially to another person, and if you do view your own report, you'll see that section covering this. If that other person does have a low or bad credit history or rating, then even if they do deny it affects your score, my 'feeling' is that it does affect it. Quite if that in turn, makes an impact on any credit you apply for, I don't know though.
Meghan - your direct questions aren't so easy to answer. If you open accounts in your name independent to your other half, then that bit should go through smoothly. However, I'm not sure when you'd be linked to your husband on your credit report (and him linked to you on his) although I'd hazard a guess it's when you decide to 'add' him to an account you have. When it comes to house purchasing, only you know your financial position etc. I've had relatives come over to the UK and been able to purchase properties with 30-50% deposit down and zero paperwork asked for (2004 & 2007) nowadays I'd think it'd be the same if you had a minimum of 40%+ to put down. Being a 'first time buyer' in this sort of scenario won't really make a difference. If you have much less perhaps to put down, you'll need to speak and find out from all the potential lenders what their criteria is, although I'd say be wary of any fixed rate interest deals for the first 1,2 or 3 years. The UK's base rate is at an historic low of just 0.5%, but as things progress and the economy slowly pulls itself out of the mire it's in, that interest rate is only going to go up. Factor in the interest rate at the end of your 'discount' period might well be higher, be prepared for a significant increase in your monthly mortgage payments at that time.
There's a few topics in this section for how to increase your credit score and to do it as swiftly as possible. It still takes time, but you can help it along very nicely if you keep one step ahead on your finances and the handling of them.
Cheers, DtM! West London & Slough UK!