Yes.Cycling is a tough sport . Unlike cricket which stops for a few drops of rain, cycling carries on no matter what. Only a land slide will stop it, like in the TdF in 2019.
To help us spot him, I suggest holding a sign*:But what you describe sounds like just miserable weather. Not extreme weather. So just take your cagoule, and stand at the side of the road with the handful of other miserable soaked cagoule wearing people. I'll look for you on the telly.
On the other hand, this is Britain and H&S is so powerful that they can stop anything for the tiniest of reason.Yes.
Although the rule-book is full of "discretion". If the route takes an underpass through Cheshire, and that is 40cm under floodwater an hour before the bunch is due, there is a strong chance of stopping/neutralising the race.
Just "bad (British) weather" would almost certainly not affect completion.
>>>>>>>>>>>>>>>>Edit: Here you go - I didn't make it up!
12 September 2011. Tour of Britain: Second stage cancelled because of high winds
https://www.bbc.co.uk/sport/cycling/14879182
While France has none and spectators can just jump into the peloton without any restrictionsOn the other hand, this is Britain and H&S is so powerful that they can stop anything for the tiniest of reason.