I wondered into Ethel Austin in Perry Barr Birmingham and to my suprise I found some really cheap Biotherm stuff - this is not a place where people would go to buy some fancy skin care... So I bought:
Self Tanning Face Gel - £3.00
Self Tanning Mist - £4.00
Self Tanning Gel for Legs - £4.00
Celluli Patch - £2.00
+ received extra 20% off.
All these products are still available on Biotherm website and outlets within UK.
Not sure if they are available in all Ethel Austin stores througout UK, but worth a try.