A single London constituency pays more income tax than the whole of Northern Ireland, an analysis of HMRC data has found.
The research showed how 67,000 taxpayers in Kensington & Bayswater paid £4.2billion in income tax in 2022-23.
This compared to 842,000 taxpayers in Northern Ireland who paid £3.8billion.
Those living in Kensington & Bayswater contributed the most of all of Britain at £62,300 per taxpayer.
This compared to £2,770 per taxpayer in Leicester East, the lowest in the country.
Overall, the top ten constituencies contributed £24.2billion a year in income tax, which was 21 times the amount paid by the bottom ten.
The top ten areas, which are all in London, paid a tenth of all income tax. This was as much as that paid by the bottom 147 constituencies.
The analysis, conducted by The Times, also showed how in 14 constituencies – all in London and Surrey – the average taxpayer paid more than £20,000 in income tax.
Meanwhile, there were eight constituencies – in the North, the Midlands, and Belfast – where the average taxpayer paid less than £3,000 in income tax.
Sir Keir Starmer’s constituency of Holborn & St Pancras, in north London, was the 11th highest contributor per person.
Taxpayers in the Prime Minister’s local area paid a total of £1.2billion.
The analysis showed how the Treasury’s reliance on a smaller number of areas to raise hundreds of billions of pounds in income tax increased over the past decade.
In 2011-12, the top ten seats contributed 19 times that of the bottom ten. This increased to 26 times in 2021-22.
It fell to 21 times in 2022-23, although this was thought to be partly a result of constituency boundary changes.
Joe Powell, the Labour MP for Kensington & Bayswater, told the newspaper: ‘I’m proud to have so many people making a contribution to our country.
‘But we’re also one of the most unequal communities and I want to see opportunity spread within Kensington & Bayswater and across the country.’
