With the outage last week of RMweb, you'll now find that any link to a forum topic you follow through a Google search will return an error:
Oops - Euston we have a problem.
The page you requested does not exist
Error code: 1S160/2
To get around this, look at the URL bar. You'll see the link from Google is formatted like this:
https://www.rmweb.co.uk/community/index.php?/topic/123456-test-topic/
Remove this piece of text " community/index.php?/ " so that the URL looks like this:
https://www.rmweb.co.uk/topic/123456-test-topic/
Your link will now work.