I am after general market statistics or case studies that relate to
purchase-protection-insurance in the UK (Britain, England, Wales,
Scotland, and Northern Ireland).  (NOT payment-protection-insurance.) 
This is for insurance combined with credit/debit/store cards.  I am
particularly interested in claims statistics but anything would be
welcome including take-up-rates.  I do not want specific retailer or
credit card company details or
tems-and-conditions just general market info.