Don’t worry, you’re not alone. My QXC was postponed something like 13 times before I finally got to go – it’s one of the joys of flying in the UK. If it’s any consolation, my skills test was in the middle of January, there wasn’t a cloud in the sky, and we had about 50 miles visibility. Honest, it does happen!
Last weekend wasn’t much cop (not in Essex, anyway) - about 5 miles vis, and snow showers (great fun in a 152!)

On the other hand, the weekend before that was near perfect – some of the smoothest conditions I’ve ever flown in, and I could see Canary Wharf from Witham (40 miles or so).
I’m sure you know this already, but UK wx is just pot luck. Hang in there and you’ll get there in the end.