Does nterest free period on CreditCard affect Credit Rating?

mecrazybenz

I have recently opened a Tesco Credit Card with 12 months 0% interest on new purchases (as long as you pay the minimum due every month).

Now I am one of those people that always pays the full balance off every month without fail.

However my question is:

If I was to take advantage of this 12 months interest free and only pay the minimum every month, will this have an adverse effect on my 'Credit Rating' because I have not payed my balance in full?

I am just thinking I could save the cash for 12 months elsewhere (where it could earn a small amount of money) then pay the full credit card bill off at the end of the 12 months.

Any answers would be very helpful.

Thanks.