For more information about the support campaign for the CM9 – those of the 182 cyclists arrested last July who are now facing trial – there is now a dedicated website: see here.
The trial is likely to run for at least a week, and takes place at Westminster Magistrates’ Court, 181 Marylebone Road, London NW1 (near the western end of Marylebone Road, just before the Old Marylebone Road junction and the flyover). If for any reason you aren’t arriving by bike, the nearest underground stations are Marylebone on the Bakerloo Line, and Edgware Road on the District, [no longer really a] Circle, and Hammersmith Lines.
You can also contact the defence campaign via CM9Support@riseup.net. But in any case, do turn up at the court in the coming days and show your support!