Evening / Weekend A Level Classes in London?

Hi all I am a 29yo full time professional working in London and want to take the Chemistry A Level. My first instinct is to self-study, but I was schooled abroad so never took any A Levels. As such, I think it may help to attend some sort of structured class. The issue is I work until 7-10pm or so during the week, so can't make most evening classes. This can be flexible, but I certainly can't make 2x630pm classes per week (Campbell Harris). Does anyone know of anywhere that offers later classes, once a week classes or weekend classes? Or should I just self-study? Thank you!
Source: New Media Medicine - Category: Universities & Medical Training Authors: Tags: A-Levels Source Type: forums