Two weeks ago, the letter I’d been dreading came through my letterbox from MBNA. “We’re sorry, but we’re closing the Diamond Club. You’ll be able to collect Destinations Miles until 30 September.” Some background first. The MBNA-issued Diamond Club card replaced the BMI credit card when the company that owns British Airways (BA) also took over BMI....

If you live close to one of the 15 Intu shopping centres dotted around the UK, including the mammoth Trafford Centre in Manchester, Lakeside in Essex and the Metrocentre in Gateshead (the UK’s largest by size), there’s a nifty way to bag yourself up to £60 in gift vouchers without changing your spending habits. It’s all down...