Nuweiba.
When the population of Dubai is approximately 1/3rd the size of London’s population alone ( about 10 million),and a total UK population of between 65-70 million then of course the “percentage” tested is going to be lower. It’s the number of tests carried out that’s important, bearing in mind that the UK started off with a testing capability of somewhere between 2-5000 a day, it’s now sitting over 100,000 a day.
Please let’s compare like for like.