A (rather delayed) update from me, on this topic. I did try to post here at the time, but from my mobile phone it didn't seem to work.

I
did find myself in Trowbridge, and at the venue, in plenty of time for the
WWRUG» meeting - no problems at all with my trains.

A very modest charge of £2 on the door for non-members was well worth it. There were some 30 in the audience.
John Roe gave an excellent illustrated talk on his work as a chaplain with the Railway Mission. He is a qualified Baptist Minister, but played down his role as such - explaining that their purpose is 'rather more listening than preaching'. There are about an equal number of male and female chaplains, so he was able to refer a female contact to one of his colleagues for further help, for example.
It was a very informative evening: I walked away with the conclusion that if anyone, anywhere, on the railways is in need of support, they should approach the
Railway Mission for help.
CfN.