Hello,
There are 2 main credit reference agencies in the UK - Experian & Equifax.
Each has a product available for this kind of business depending upon your needs.
It sounds like your client needs risk assessment rather than credit score so try this link to Experian:
http://www.experian.co.uk/business/f...ent/index.html
Equifax also have extensive risk solutions but seem more credit related. You can see details at:
http://www.equifax.co.uk/business_so...valuation.html
Integration is something you'd have to discuss with whichever provider you/your client decides to go with - I don't think there's a standard solution.
Acceptance by either agency is fairly straight forward, your client will have to go through the usual anti fraud checks etc.
It's been a while since we used either firm directly so I wouldn't have any idea about current costs but they are based on a 'per enquiry' format (for example £2.95 per applicant/address searched)
Hope this helps a bit.