Sixth Forms with Jan Intake

DLD College London does that. It's private though, don't know if that would affect your decision?

They do AS and A2 and are well known for letting students in at all times of the year; as well as this a lot of people there are retaking due to personal circumstances. They also have a high proportion of international students.
They have accommodation at Urbanest buildings and are mainly based in Marylebone as well as a sister school in Belgravia.

Just wondering if anyone knows any sixth form colleges with a January intake? Near London with lodging. Thanks

Cambridge Centre for Sixth Form Studies :-) has accommodation and not too far from London.