20.6% is lower than Denmark, Austria, Germany, France, Netherlands, Belgium, etc. It's on the lower end, while not being lower than the UK and of course not Ireland (considered a semi tax haven).
Starting 2023 it will be lower than the UK as well for any business above GBP 250,000 when HMRC bumps that rate to 25%. Heck, I would argue that even 20.6% is not that different to the current 19% across the board in the UK.
If you are reinvesting money in the company (especially at a start up stage), Corporation Tax is the least important tax. More important is how much employees cost and UK is up there with the highest taxed countries in the world.
If you want to pay workers more than peanuts, the tax take is more than 50% on a salary (when including Employer's NI).
