Foreign purchases and consumer credit act s75

I've been investigating the issue of whether purchases from retailers outside the UK made using my UK credit cards are covered by section 75 of the consumer credit act. The legal position appears to be unclear, and several sources say that HSBC, Sainsburys Bank and HBOS have all indicated to the OFT that they will voluntarily honour any claims relating to foreign purchases.

One source

says that MBNA will also honour claims, but I can not find any other information to corroborate this. The article is also unclear about the exact nature of MBNA's commitment - was it made to the OFT? Does anyone have any further information? Is it correct that MBNA have also agreed to honour section 75 claims along with the above 3 card issuers? And is this position documented anywhere?

I frequently make purchases from abroad and need to know whether my MBNA card affords me maximum protection, or whether I ought to be applying for an alternative card.