Well, hooray, thank you all for your very constructive comments and ID's .Special thanks for Nigel for the Wealdstone ID, most impressed and pleased with that one, as my other favourite site is Whitefriars.com and so far, has been ID'd as W/F, but with no details as above. And thanks to Anne et al.
The "donut" description is from my imagination, as it was the closest thing to its appearance I could think of...it can just glow in a corner until I see some definite attribution in the future.
And...as for my South Coast location...I'm in the UK, East Sussex! Mystery solved! Have a good day everybody and again many thanks for all the input.