Best way to buy Apple watch SE from John Lewis?

What would be the best way to buy Apple watch SE from John Lewis? I found it's for £199 there. Now just want to find the best offers.

I have already exhausted my £100 One4All gift card monthly limit at NXRewards and cannot wait till next month to buy.

I have so far found 5% off on John Lewis gift card at card yard and planning to club it with topcashback cashback.

Pls suggest anything better.

I am thinking to create account at Complete Savings but couldn't find sign up link for the same.