Beware the Barclaycard "0%" credit card offer. I looked into this and found it was another "Hoover Offer".
The fine print shows that you have to spend a minimum of £50 per month on the card (min £600 pa) and this attracts their high interest, but you can't pay this off until you have paid the rest of the loan off; all the money you pay them each month goes to reducing the debt of the "0%" part. You therefore are building up a debt at high interest at the rate of £50 per month.
Do the sums and you will find its another "Hoover Offer".