Thanks all 
I’ve made an initial order. I used the code REFRESH to get a free facewash too (I’d finally succumbed to clicking through a facebook ad then asked here to get impressions). Will see how I find them! There are a couple of weeks between the first blade and the next set, so if I’m not keen I would just cancel.
I added a £5 referral code to Referral Wiki: Post/Find Here