Photo found here
Photo found here
SOURCES:
BBC NEWS-
https://web.archive.org/web/20100826035155/http://www.bbc.co.uk/news/uk-england-london-11084086
https://web.archive.org/web/20100826075920/http://www.bbc.co.uk/news/uk-11089573
https://www.bbc.com/news/uk-england-london-11079976
https://web.archive.org/web/20100826061444/http://www.bbc.co.uk/news/uk-england-london-11093184
https://www.bbc.com/news/uk-17790563
https://www.bbc.com/news/uk-wales-57448396
https://www.bbc.com/news/uk-wales-north-west-wales-11095158
https://www.bbc.com/news/uk-england-london-12059910
https://www.bbc.com/news/uk-england-london-17562112
https://www.bbc.com/news/uk-17865736
https://www.bbc.com/news/uk-england-london-17812112
https://www.bbc.com/news/uk-24927078
https://www.bbc.com/news/uk-wales-56158160
https://www.bbc.com/news/uk-wales-57448396
The Guardian-
https://www.theguardian.com/world/2010/nov/20/gareth-williams-spy-mi6
https://www.theguardian.com/uk/2012/may/02/gareth-williams-key-unanswered-questions
https://www.theguardian.com/uk-news/2013/nov/13/mi6-spy-dead-bag-locked-himself-gareth-williams
Channel 4 News-
The Sun-
https://www.thesun.co.uk/news/6054989/russia-gareth-williams-spy-gchq-skripal/
https://www.thesun.co.uk/news/13141356/spy-murdered-by-russians-mi6-mp-claims/
https://www.the-sun.com/news/3134754/clues-spy-in-bag-gareth-williams-dna/
https://www.thesun.co.uk/news/15348401/clues-spy-in-bag-gareth-williams-dna/
The Independent-
The Mirror-
https://www.mirror.co.uk/news/politics/police-probe-links-between-spy-12365319
https://www.mirror.co.uk/news/uk-news/new-evidence-revealed-over-body-23456725
Other individual sources-