FWIW, this just in from avios.com:-
Your chance to win a share of 1 million Avios
Turn your Tesco Clubcard vouchers into Avios before 28 February 2018 and you’ll be in with a chance of winning a share of 1 million Avios.
Every £2.50 in Clubcard vouchers is worth 600 Avios plus one entry into our prize draw to win up to 50,000 Avios. So turn your Clubcard vouchers into Avios today and your next Avios adventure could be sooner than you think.
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Tesco February Prize Draw Terms and Conditions- [*]
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