Trending
A recent development means customers can now swap their unused Avios points into Nectar points, or vice versa.
Martin said this trick could help customers get “serious shopping at Sainsbury’s”.
However, he warned it does involve a credit card, which carries some risks.
“It’s about the American Express Rewards Gold credit card,” he explained.
UK s top supermarkets (Image: DX)
READ MORE
“If you are accepted for that and you spend £3,000 on it in three months you will get 23,000 AMEX rewards points which includes the 23,000 point bonus.
“I would only do this for your normal spending each month over £1,000 each month. It is quite a high amount.