I don't normally buy crumpets but this morning I saw some sourdough ones in the reduced section in Morrison's so I thought it would be rude not to, especially as I bought a fresh block of Lurpak yesterday. I have been known to top them with blue Stilton and potted beef but I generally just use butter. Not too much, mind, as it gets everywhere!
They must be adequately toasted too. Underdone or nuked crumpets are just no good.