I wonder who makes the Bell tents uk tents?
The Chinese.
Soulpad and BelltentUK have a monopoly with a company called Obelink in The Netherlands. Obelink send any product to the UK except the bell tents, which they only ship to Soulpad and BelltentUK who mark them up significantly to sell as boutique glamping tents.
https://www.obelink.nl/sahara-safari-400.html
I got lucky with mine, got someone on the phone at Obelink who obviously hadn't been informed of the embargo and posted me one for nearly £200 less than the identical Soulpad. I got the unzippable groundsheet version so I could unzip and roll the sides up. I never have, but it's a nice option on a hot day.
Have a look on Aliexpress, there are loads of them much cheaper than anywhere. I reckon quality varies, my Obelink is rated 'heavy canvas', but a bit of looking around should find you something.
Maybe factor in an awning too, very useful.