Sign up to FREE email alerts from our Money Saving Club Newsletter Money Saving Expert Martin Lewis has shared an important piece of advice for anybody who eats at McDonald's.
The finance expert appeared on ITV's This Morning to share the tip - which could save hungry customers some serious cash. According to Martin, getting free food is easier than you might think.
All you need to do is fill in the McDonald's survey on its website to get a cheap Big Mac. READ MORE: According to Martin Lewis, you can buy a 20p sweet curry dip to get your first receipt so you can save even more money.
Visit McDonald's Food for Thoughts site to enter the code and fill in a survey about your last meal. When you tell McDonald's what you thought of the
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