« Reply #13 on: Sunday 16 August 09 11:32 BST (UK) »
On FreeBmd transcription of the GRO death reg index is complete under to 1910. Between 1910 & 1931 it's not far off and after that it's minimal. Ancestry has transcribed deaths 1984 - 2005. Until Ancestry put online their indexing (later this year?), there's only one way and that's searching through the complete index quarter by quarter.
Just double checked and how did I miss this reg last time I looked!

Marion Adeline Smith died July 1989 Cheltenham vol 22 pg 1329 birth date given as 18/5/1914
Possible for her husband May 1992 Cheltenham 22 1421 dob 3/8/1910

Cornwall: Allen, Bevan, Bosisto, Carnpezzack, Donithorn, Huddy, James, Retallack, Russell, Vincent, Yeoman
Cards: Thomas (Llanbadarn Fawr)
Glam: Bowler, Cram, Galloway, James, Thomas, Watkins
Lincs: Coupland, Cram
Mon: Cram, Gwyn, John, Philpot, Smart, Watkins
Pembs: Edwards (St. Dogmael's)
Yorks: Airey, Bowler, Elliott, Hare, Hewitt, Kellett, Kemp, Stephenson, Tebb