Hi,
It is important to establish whether your company is established in the UK or established overseas.
If you are established in the UK then the £85K does apply and you do not need to register for UK VAT until you breach this threshold.
However if you are a'non established taxable person' then the threshold does not apply and you would need to reguster for VAT upon the first sale being made in the UK.
Who should register for VAT (VAT Notice 700/1)
Whether you would have needed to register for VAT in 2021 will depend on whether you are a non established business or not.
Thank you.