Mine is a bit different as I auto-convert:

"We wanted to take the time to say “thank you” for turning your Tesco Clubcard points into Avios.

So, for every Clubcard point you collect on spending, this quarter we’ll give you a bonus 20% Avios, helping you get one step closer to your next holiday. Don’t forget you can use your Avios towards a part-payment of your next holiday or treat yourself to a cabin upgrade.

You’ve still got time to make the most of your 20% Avios bonus, so keep spending before 18 October and help turn your everyday spending into something you’ll never forget."

Unfortunately I tend to only earn a couple of hundred clubcard points a quarter these days so won't exactly be swimming in points!