Originally Posted by
potakas
If your location is not in London and you have to make a UK domestic flight, I would suggest you a return to ATH, will give you 160TPs. The cost for the restricted ticket is £560 and if you have time to wait for a sale you will find it £450.
Indeed - slotting in a Band 3b flight like ATH or HEL can be point-efficient, and prices can be reasonable(ish). EDI-LHR-HEL-LHR-EDI would give you 160 points for GBP 570. LHR-HEL-ARN-HEL-LHR would be 200 points for GBP 650, with added bonus of better food than CE if you book on Finnair metal.
As
britbronco22 says, it's good to actually go somewhere you want to travel to, rather than have a rubbish day or two flying just to get some points...