Liverpool Street

Does anyone know what the bike parking is like at Liverpool Street for
overnight parking? Also can anyone tell me a good route on the bike to
St. James's Park from Liverpool Street, preferarbly on quiter roads or
ones with decent cycle lanes, as I haven't ridden a lot lately, and
never really done much cycling on roads. I'm a little dubious about
various routes the cycle planners show.

Thanks for any info,
Greg