Thanks a lot M, you're a star !
and there was me worried about knocking your suggestion she'd died in Plymouth.
What a shame she only died a few years ago...

I've tried Googling her name for more clues as to where she was buried but no luck yet.....but I see their marriage was reported in the Gloster Journal, according to the BNA site;

"Miss Phyllis May Witts, only daughter of Mr S. J. Witts and the late Mrs. Witts, Crown House. High-street. Newent, and Mr. Frederick ......only son Mr and Mrs. W ”
Sat 24 Jul 1948, Gloucester Journal, Gloucestershire, England

http://www.britishnewspaperarchive.co.uk/search/results?region=south%20west%2c%20englan...