And as I mentioned before, most startups tend to only be UK domiciled for funding reasons, but majority of their operations and leadership are located outside the UK.
Foreign (read: American) VCs tend to conduct transactions in a handful of very well regulated markets, so a Chinese, Indian, or Romanian startup will often have to make a domiciled corporation in a financial hub like the UK or Singapore in order to raise.
For example, Revolut has around 16,000 employees, but barely 2k in the UK and around 7k in Poland+India - and most of these roles are engineering AND strategy roles.
> London also has the largest software sector outside the US, after the Bay Area, Boston, and NYC
Source? Boston is nowhere near a top software hub - both Seattle and Austin are much larger in the software space than Boston.
And I would be shocked if the net amount of SWE roles in London is higher than Tel Aviv or Bangalore.