I bought some on Amazon back in April but haven’t got round to trying it yet, mainly as I didn’t have a clue as to how best to apply it...so many thanks to Catch-22 for the info above, very useful 👍
https://www.amazon.co.uk/gp/product/B07XZ45QZY/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1
They do another size tin as well.
cheers
Fizz