If you have a problem with a purchase made by credit card or via a credit agreement offered by a retailer, you may be protected under section 75 of the Consumer Credit Act. This makes the credit provider jointly liable with the retailer for anything you buy, provided the item costs between £100 and £30,000. ... Purchases made on debit or prepaid cards or chargecards are not covered by section 75. Neither are purchases on credit cards that are worth less than £100 or more than £30,000. However, your card provider may offer chargeback.http://www.guardian.co.uk/money/2012/jan/20/section-75-charg...
Anything under £100 and might be out of luck.
Take Mastercard's scheme
• The cover applies to Mastercard debit cards, prepaid cards and Maestro cards, and to purchases made on a Mastercard credit card which don't qualify for section 75 cover
• There is a minimum spend of £10 but no upper limit on spending
PS: Subsection (1) does not apply to a claim—
(a)under a non-commercial agreement, F1. . .
(b)so far as the claim relates to any single item to which the supplier has attached a cash price not exceeding [F2£100] or more than [F3£30,000][F4, or]
I've had to do it twice so far, never had a problem, and all for purchases (actually, things like London congestion charge fine payments, as well as pizza deliveries etc.) under 100 GBP. The way I see it, the law describes minimums; banks, on the other hand, may want to keep customers.
Anything under £100 and might be out of luck.
Take Mastercard's scheme
• The cover applies to Mastercard debit cards, prepaid cards and Maestro cards, and to purchases made on a Mastercard credit card which don't qualify for section 75 cover
• There is a minimum spend of £10 but no upper limit on spending
PS: Subsection (1) does not apply to a claim—
(a)under a non-commercial agreement, F1. . .
(b)so far as the claim relates to any single item to which the supplier has attached a cash price not exceeding [F2£100] or more than [F3£30,000][F4, or]
http://www.legislation.gov.uk/ukpga/1974/39/section/75