Good luck, bonne chance etc. Floodlight is a big brochure of all the adult education in London, when I last bought it 10 years ago it was available in WH Smith and other newsagents but tended to come out once a year. I would guess they have a website now, maybe worth googling?
It's great but I always felt slightly let down when I'd bought it as it wasn't cheap and I always found the class I wanted within about 2 minutes, leaving me with this big book to chuck out. Victim of its own quality.