OK remove the Cayman Islands. How much better does it look now? We're still lagging behind most of our major competitors, and some.
The other thing is, why don't we try having a competitively low business taxes and incentives, like say Ireland? Their GDP per capita is 2x ours. Ireland FFS.
Why do you think Google (Alphabet Inc.), Apple, Meta (Facebook), Microsoft, Intel, Pfizer, Airbnb, PayPal, LinkedIn, eBay, Twitter / X Corp., IBM, Hewlett Packard Enterprise (HPE), Medtronic, Johnson & Johnson, Dell Technologies, Oracle, Cisco, Salesforce, TikTok (ByteDance), HubSpot, Stryker, Boston Scientific, Abbott Laboratories, Accenture, Qualcomm, Adobe, VMware (Broadcom), Workday, Electronic Arts - and countless others - are all HQ'd in Ireland? All employing people, paying decent salaries, paying corporation tax and hugely stimulating their economy.
Don't you think that would be good for our economy? This is just one example of how LOWER TAXES makes everyone better off. And higher taxes makes everyone worse off.
Others have responded to this already, but I will point a couple of things out.
The first country that has a comparable or higher population than the UK is the US, which has been the leading economy for a century. The next on the list is Germany. Dependent on where you put the cut off (40m, 50m), it's then canada or the UK. So we're third or fourth based upon medium to large nation states. So all in all, the list means very little
There's a reason statisticians use statistical neighbours when carrying out comparisons.