ooo - i like this tidbit of insight "piccadilly line of hell" - would that be a cultural experience? Im familiar with the subway to bedsty or the 4 to gct and the red line on the T but I dont know the piccadilly line.
http://www.heathrowexpress.com
http://journeyplanner.tfl.gov.uk…
http://trustedplaces.com/places/…