Originally Posted by chicken

Dave, there's an underground NCP at Finsbury Square. £3 a day for bikes.

details here.
http://www.ncp.co.uk/multimapform.aspx?client=ncp_xml&width=500&db=gb&h eight=290&X=532784.978672058&Y=181980.89370657&the mode=3&scale=10000&type=zoom&dist=0.33,0.50,0.56,0 .65,0.76,0.77,&coordsys=gb#details

I haven't used them myself but can't see there being problems if it is covered and they have bike-specific bays.

cheers,
Chi