GB Stamp and Postal History Sites
Index to Plating the Penny (John A. McCulloch)http://philately.ttrr.org/gb/plates/begin.html
The 'E-Gauge' -- John has developed a remarkably effective tool for creating a short-list of possible plates from a set of Fisher/Brown measurements.
Postmark town finder (John A. McCulloch)
http://philately.ttrr.org/gb/towns/victowns.html
A search tool which lists possible towns from just a few letters on a 19th century postmark.
The One Penny Postage Stamps of Great Britain 1848-1864 (Tim Burgess)
http://home.earthlink.net/~pennyred/
The Postage Stamps of Great Britain 1840-1901 (Tim Burgess)
http://members.tripod.com/~pennyreds/
Great Britain Machins (Robin Harris)
http://www.adminware.ca/machin.htm
King George VI Great Britain
http://www.kg6gb.org/
Early Precancels of Great Britain
http://www.early-gb-precancels.talktalk.net/
Postage Labels of the UK
http://www.postagelabelsuk.com/
UK Meter Franking
http://www.meterfranking.co.uk/