I'm not barricaded anywhere like most other people where I live (BC, Canada) and about 1% of the population has had the virus. And this number is high (yes, high) because people feel like cramming hundreds of people in a small place and partying during a pandemic (or in this case 100 people together) is the right thing to do and in general people not willing to be put to the slightest inconvenience like reducing their social circle, doing stuff outdoors instead of indoors, wearing a mask, staying home when sick etc. Where did you get the 1 in 4 for the UK number from? No way it's so high and the UK is the second worst in the world in cases per capita. Vietnam? Taiwan? China? Japan? Finland? Norway? Greece?
<rant> The problem is that in order to get each person on average to infect less than one person everyone has to do their bit. If 95% of the population is infecting 0.98 people at average but the remaining 5% are each infecting 20 people it's not going to work. Those 5% push the total reservoir for the virus up (more mutations, fun) and they keep increasing the odds of getting sick for each of the individuals in the 95%. And I'm being generous when I say 95% actually do their part. If there's a single sick person in BC and they transmit to 0.98 people then my odds of getting sick are essentially zero, but if there are 6000 that transmit to 1.02 people each that's a different story. </rant>