Bicycle Tag of bike

There's a C of E church dedicated to St John the Baptist at Hoxton but I suspect the Hackney one may be a different St John. It's presumably linked to the Knights Templar (as in St John's Ambulance, St John of Jerusalem etc).

Oh, and there's also St John of Jerusalem, in Victoria Park:

http://www.achurchnearyou.com/parish/230089/

http://www.londongardensonline.org.uk/gardens-online-record.asp?ID=HAC038