Tesco is giving away free bags of groceries today (Picture: Shutterstock / Alastair Wallace)Tesco is giving away free bags of grocery essentials today (July 29). The retailer will be gifting the essentials to holidaymakers touching down in the UK today, at London Southend Airport. As part of a partnership with easyJet holidays, Tesco will be running a pop-up known as the ‘Back From Holiday Shop’. How to win a Tesco or easyJet voucherIf you aren’t coming back from a holiday today, you could still win money off your groceries, as Tesco is also running a competition with voucher prizes. Taking place on Instagram, Tesco and easyJet holidays will be giving away ten £250 vouchers for Tesco to be spent in-store, and one lucky entrant will also win a free holiday worth £1,500.