So I didn’t realize, or pay attention, or I can’t remember. Squirt is a great lube for dry, dusty conditions; it is not a great lube in wet conditions. I don’t ride in the wet except for cyclocross season sometimes but even though I don’t really like racing in mud anyway. I just stay with squirt on all my bikes even the CX bikes. They are only raced in wet conditions a few times a year so it isn’t worth running an oily lube on them only to have to degrease the chain again to be able to use squirt when it dries out.
You might try WD-40 wet lube. I have some of that and it works really well, I think I’ve only used it once.
Moral of my comment is If you’re riding in the UK I would think you want a wet lube all the time. I wouldn’t even mess with any type of dry or wax lube if you’re consistently getting wet, riding through puddles, etc. Dry lubes inherently don’t like wet conditions; they’re designed to not have dust stick to them and get washed of quickly with water. Wet lubes are thicker and stick to the chain better, and shed water better.
That’s my 2 cents.