Martin Lewis says M&S and Sainsbury's shoppers can get free £140 if they act by Tuesday

Martin Lewis' Money Saving Expert has shared how shoppers can bag a "triple reward" which gives them £140 OFF at the Amazon or Sainsbury's checkout. BBC and ITV star Mr Lewis' MSE highlighted in its latest weekly email how you can get £140 to spend at Amazon, M&S or Sainsbury's, along with Deliveroo cashback worth £120 a year.

You can also get four free airport lounge passes a year, worth around £50 each. It explained: "The American Express Preferred Rewards Gold credit card (link goes via eligibility so you can see if you'll be accepted, or you can just apply) has temporarily increased the points you get for signing up to it, making it a powerful deal for some. "

You get enough bonus points to get £140 at Amazon, M&S or Sainsbury's if you spend £3,000 within three months. MSE said: "For those who haven't had an Amex card within the last two years, and who'll spend a total of £3,000+ over the first three months (so it's for higher spenders, but many families do £1,000/mth if they put all spending on it), open the card by 11.59pm on Tue 16 Jul and you can currently get 25,000 bonus points (normally it's 20,000) on top of the standard one point per pound spent.

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"So hit the trigger and you'll have at least 28,000 points, which is enough to be exchanged for £140 in Amazon, M&S and Currys, or £140 worth of Sainsbury's Nectar points or 28,000 air miles with Avios, Virgin, Emirates and other airlines, or 42,000+ Hilton, Marriott or Radisson hotel points."

You also get two £5 Deliveroo cashbacks a month (worth up to £120/yr), and four free airport lounge passes a year (worth around £50 each). But MSE said: "Warning. The card is fee-free in year one, but £195/yr after. Diarise to cancel before year two if you don't want to pay the £195.

"Plus if you don't repay IN FULL each month, it charges 31% APR on purchases. Make sure you've a Direct Debit in place to ensure that never happens."