I think the shortest licensed runway in England is 18 / 36 at Netherthorpe EGNF. A quick check of my flight guide (see AIP for definitive info) gives r/w 18 landing distance available (LDA) of 357 metres and r/w 36 LDA of 309 metres, and r/w 36 is downhill. TORA in both cases is 382 metres.
"Main" runway at EGNF is 06 / 24 with LDAs of 407 / 370 metres.