Can you buy Tant pour tant for macaron making anywhere in the UK?

[BlueberriesAndCream]

Looking for tant pour tant available in the UK. Costs a bomb for delivery for all the places it's available in the rest of Europe. The macaron recipes say that the stuff you buy is much finer than you get when grinding almonds and icing sugar yourself (especially in my not very fine mini food processor). I will make it myself if needed, but hoped for an easy source that doesn't cost quite so much for the prepared stuff.