I am in Scotland. I have had no alarm call, although it has been described as UK-wide. That has made no difference to the likelihood of me dropping a cigarette end, lighting a disposable barbecue in a field of parched long grass, or starting a bonfire next to a bone-dry wooden shed, because I wouldn't do any of those things anyway. However it may make a difference to some people who hadn't realised how easily they can cause a fire that destroys the homes. livelihoods, and even the lives, of real people.
If I had heard it, it would have been a shock, but I think that would have been better than leaving the population to stay complacent about just how near we are to having uncontrollable fires raging across the country. We have been lucky in the past, compared to countries in parts of the world where these high temperatures and extensive wildfires have been the norm.