Assuming your other half has no joint debts with you - it should have minimal affect. You will need to inform your I.P as living costs may be reduced as your partner will be contributing to household bills so another I & E will have to be drawn up. Did you live together prior to getting married?.
As well as joint debts, avoid setting up joint bank accounts too. Joint savings are fine though as they are not credit checked and don't result in you becoming linked at the CRAs.
We're willing to wipe the slate clean, give you a fresh start. All that we're asking in return is your cooperation.