Cheap Flights?

I live and work in China and fly back to the UK once a year, the cheapest flights are on the net, however I do not have a credit card and so I can not take advantage of these offers, any ideasCheap Flights?
Open up a checking account with a bank that has a visa or mastercard debit card. Those debit cards can be used, like a credit card, except that the money is removed directly from you checking account.
I have a Chinese friend who tells me the best airfares to any place are out of Singapore!Cheap Flights?
don't buy. get them straight at normal price from airline webs.