Consolidating what we know already and post-editing using further contribution by Jack Rudd (referenced CB site rather than Wikipedia, as seems more authoritative):
Sources:
a) Livre d'Or de la Fédération Internationale d'Echecs, FIDE, 1976
b) FIDE Golden Book 1924 - 2002, Wlly Iclicki, FIDE 2002
[Note:- perhaps not 100% reliable]
c) Chess A Biobibliography, Jeremy Gaige, McFarland & Co., 1987
d) ICCF website
http://www.iccf.com/downloads/titles/2006_GM.pdf
[Note:- for correspondence GM titles up to 2006]
e) PCCC website
http://www.saunalahti.fi/~stniekat/pccc/titles.htm
[Note:- for composition and solving titles]
f) FIDE website
[Note:- doesn't give info about inactive players]
g) English Chess Federation THE OFFICIAL CHESS YEARBOOK 2006
h) BCM 2002, BCM 2003
i) two postings to this thread by Jack Rudd
j) Chessbase website, article titled David Howell becomes a grandmaster at 16,
http://www.chessbase.com/newsdetail.asp?newsid=3591, viewed 23 Jan. 2009
1950 Mieses, Jacques *27.2.1865 Leipzig +23.2.1954 London
1972 Mansfield, Comins (GBR) (PCCC composition) *14.6.1896 Witheridge +28.03.1984 Paignton
1975 Richardson, Keith Bevan (ICCF)
1976 Miles, Anthony John *23.04.1955 Edgbaston +12.11.2001; then later, Keene, Raymond D
1976 Hollis, Adrian Swayne (ICCF)
1977 Stean, Michael F
1978 Nunn, John DM
1980 Speelman, Jonathan S
1980 Clark, Peter Hugh (ICCF)
1982 Mestel, A Jonathan
1982 Miles, Dr. Jana (IWGM) (née Malypetrova, then Hartston, later Miles, now Bellin) (given as CSR by FGB 1924-2002, when did she change nationality?)
1983 Chandler, Murray G (given as NZD, when did he change nationality?)
1983 Penrose, Jonathan (ICCF); Webb, Simon (ICCF) *10.06.1949 London +14.3.2005
1984 Short, Nigel D
1984 Markland, Peter Richard (ICCF)
1985 Plaskett, H James
1985 Golombek Harry (HGM) *01.03.1911 London +1995
1986 Bryson, Douglas Marshall (ICCF)
1987 Flear, Glenn C
1987 Arakhamia, Ketevan (WIGM) (then USSR, later Georgia, now Scotland, as Arakhamia-Grant)
1988 Hodgson, Julian
1988 Lalic, Bogdan (then Yugoslavia, now England)
1988 Arkell, Susan K (née Walker, now Lalic)
1989 King, Daniel J; Adams, Michael; Norwood, David
1989 Povah, Nigel Edward
1990 Gallagher, Joseph (then England, now Switzerland, I think); Watson, William N; Levitt, Jonathan
1991 Conquest, Stuart
1992 Hebden, Mark; McNab, Colin A (Scotland); Motwani , Paul (Scotland)
1993 Davies, Nigel D; Sadler, Matthew
1993 Penrose, Jonathan (HGM)
1993 MacLeod, Norman Alisdair (GBR) (PCCC composition) *06.12.1927 Glasgow +?
1994 Wells, Peter K
1995 Arkell, Keith; Emms, John; Howell, James;
1995 Muir, Andrew J (Scotland) (ICCF)
1996 McDonald, Neil; Ward, Christopher G; Baburin, Alexander (Ireland)
1996 Prizant, Michael (ICCF); Johnson, Maurice W (ICCF); Kilgour, David A (ICCF) (Scotland)
1997 Kumaran, Dharshan; Summerscale, Aaron P
1997 Hunt, Harriet V (IWGM); Ciuksyte, Dagne (then Lithuania, now England)
1997 Millican, Peter JR (ICCF)
1997 Mestel, A Jonathan (PCCC solving)
2000 McShane, Luke; Parker, Jonathan
2000 Houska, Jovanka (WIGM)
2001 Pert, Nicholas
2001 Brookes, John G (ICCF)
2002 Hall, Richard VM (ICCF); Brooks, Dr Ian S (ICCF)
2002 Lee, Graham (PCCC solving)
2003 Turner, Matthew J (seems to have snuck in as IGM on the Jan 2003 IRL without fanfare)
2004 Coleman, Peter (ICCF)
2004 Jones, Mary E (ICCF LGM)
2004 Nunn, John DM (PCCC solving)
2005 Barber, Jill (ICCF LGM)
2006 Pugh, John (ICCF)
2007 Howell, David WL; Jones, Gawain CB; Haslinger, Stewart; Aagard, Jacob (Scotland)
2008 Williams, Simon K
Need to find dates for the following (according to FIDE website):
ENG: Daniel W Gormally
ENG WGM: Jackson, Sheila
SCO: John Shaw
Still not sure that the list is complete or entirely accurate. Know that some more of the players given have passed away; will supply biographical data later.
Would be nice to give biographies of these players, particularly of those no longer with us.