I have a batch of .uk domains I'd like to sell, but unsure of the best sites to list them. They are caught domains, all with PR (mainly 3, 4 or 5) and good DA / PA, and solid backlink profiles. Most were researched and caught with original plans for a client serving network, which is now no longer required. These are domains only, no sites, just a holding page to maintain PR through updates. Any suggestions on the best sites or forums to list these for sale?