Any ideas when All Saints might do 20% off?

[onlyconnect]

I have my eye on a very expensive bag at All Saints. It's not in the sale and I know I can get 15% off by signing up to their emails. It's so pricey though that it's worth waiting for 20%.
Does anyone know when they might do this please?

It’s a bit of a wait, but they always do a Black Friday sale in November which is 30% off everything.

I thought they did one then but didn't realise it was 30%. It might be a bit too long to wait unfortunately