BTW there is a UK forum section of ECF in National Forums but you don't have enough posts yet to post there. You need 5 posts or replies in New Members (non-spammed) and an hour's wait to be able to post elsewhere or send PMs. Ditto for the UK Classifieds and Vendor section of Buying & Selling.
Maybe someone in the UK forum will know a KR808D-1 seller or rebrander in the UK. A rebrander probably would not even call it KR808D-1 so you might never find it by searching the web.
A lower-hit alternative would be Joye 510 manual (180mah) or Joye 510 mega xl manual (280mah) w/ blank Boge cartomizers. And I would use thin clear juices with that, 20% or less VG though 30% works if you want more vapor vs more life out of each carto.