With a budget of £1,000 I would decide on a project and buy tools as I needed them rather than buy things a might need.
But other than the lathe: a nice solid bench, a bench drill, decent set of drills in 0.1mm steps, a bench vice, hacksaw, some files (large and small), small hammer, soft-face hammer, pliers, screwdrivers, Allen keys, modelling knife, little spanners, a square, digital calipers, a couple of nice rules, a slab of something hard and reasonably flat and a bench grinder will accomplish a fair bit.
Neil