Especially in the UK, most riders are older. So they've been riding for decades, and, often, their last crash was a long time ago. That's a good sign of course – the skillset they've got in their brain, plus the self-preservation instincts that come with age mean they are less and less likely to have a spill.
But those factors also mean complacency can creep in. If you believe you know it all, and are totally in command of things, then faults can start to appear. Thinking that crashing is something that only other people do is also a dangerous trait.
Keep assessing your riding, and don’t be afraid to seek out training, or accept that you might have holes in your technique.