Comparing nations in different stages of economic development by gdp growth is one of my stranger pet peeves. I mean, look, the UK is clearly no Slovakia or Malta, but maybe starting out as the second largest economy in Europe makes it harder to grow as fast?
I was curious about the data, Wikipedia only goes back to 2005, but 2005-2015 the UK was middle of the pack for GDP growth, ahead of that other economic laggard Germany. The only reason I can think that pushing that range back 5 years hurts the UK so much would be the dotcom bust. That's another pet peeve of mine, the tops of bubbles and the depths of depressions seem to be particularly inaccurate measures of underlying economic health, why do we insist on measuring everything in relation to them?
(I don't actually have particularly strong opinions on Brexit or Britain's economy, but I did get a overwhelming urge of "someone's wrong on the internet" looking at the statistics cited)