When I worked in Piccadilly Circus I would enjoy wandering during my lunch break and discovered many a cute lil shop/pub/statue/monument/gallery/free music show in a chapel etc. I don't miss the commute but I miss the area.
We stumbled upon this place a little while ago... nondescript door, only went in as needed the loo.. then discovered little tables underground, with candles etc. So atmospheric. Apparently the oldest winebar in London! From 1890.