I remember going for an interview at UCL (back in the seventies) which was held at their observatory out at Mill Hill - originally Will Hays place. Impressive selection of equipment (well, I thought so at the time - Hubble it wasn't). It must have been wonderful when it was built, out there in the countryside north of London. By the seventies it had a dual carriageway right on the doorstep, laden with massive lorries rumbling by and shaking everything up, and the sodium streetlights everywhere were a bit of a problem too. At optical wavelengths the site was pretty well useless. Pity.