Bah, poor viewing conditions mean I never saw it, let alone got any pictures
I also suspect it went much further North of Flat Holm than expected, to get from Filton to Cardiff
So instead, a picture of another bit of history that is in desperate need of funding, that also shows a just visible view of Flat Holm beyond and you may be able to see South Wales in the distance (approx 10 miles away).

Full size picture
here
As you can see, the cloud was not helpful
Mark

Standby alert

“There are four lights!”
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb

Looking forward to summer in Somerset later in the year
QL, Falcon, Atari 520STFM, Atari 1040STE, more PC's than I care to count and an assortment of 8 bit micros (Sinclair and Acorn)(nearly forgot the Psion's)