Want to avoid the sky-high prices charged at service stations? Well now there’s an app for that.

Moto has launched an app that knocks 20% off all purchases made at M&S, the West Cornwall Pasty Company, Costa coffee and WH Smith - as long as it’s Tuesday.

“Tuesday Topper is an expansion of the Daily Deals that all app users receive every day and has proved extremely popular,” said Moto CEO Tim Moss.