Following a request from ministers to UK mobile networks, every mobile phone owner in the UK will be sent a text message on Boxing Day urging them to get a booster jab if they have not already done so,
The appeal to those aged 18 and over is the latest attempt by the Government to encourage take-up of third vaccinations as the omicron coronavirus variant rips through the country.
All of the mobile network operators will send out the text messages, including BT owner EE, Vodafone, Virgin Media O2 and Three.
It has the potential to reach an estimated 60m people across all four nations of the UK.
The move comes after Boris Johnson issued a Christmas message urging Britons to get their boosters, saying it was a “wonderful thing” they could do for their families and others.