Why fences have been erected in Aylestone Meadows in LeicesterThere are metal gates too - but why? View 2 Images Works are underway in Aylestone Meadows. Fences have gone up at a Leicester beauty spot, but why? Pebble Beach, in Aylestone Meadows, which is the city’s largest nature reserve, is currently the focus of pipe maintenance work. ‌Cadent Gas, which distributes gas across the nation, told LeicestershireLive that it was painting pipes that run underneath the bridge with an ultraviolet UV coating.