Hi Paolo,
In order to register for VAT then we would always need to be satisfied that you are making taxable supplies in the UK.
Please see the guidance below:
3. Working out whether you need to register
9. Non-established taxable persons — basic information
The Place of supply rules determine whether a UK supplier would need to charge an overseas company VAT on their services.
If the services provided fall under the General Rule then their supplies would be Outside The Scope of UK VAT and no VAT charged to you.
Please see below:
Place of supply of services (VAT Notice 741A).
If the services purchased do not come under the General Rule then VAT would normally have to be charged to an overseas company.
Please see the same link, sections 7-10.
If you make taxable supplies in the UK then you will be required to register for VAT as an overseas trader and you will be able to recover the VAT as your inut tax subject to the conditions below:
10. Introduction to input tax.
If there is no entitlement to register for VAT in the UK and you incur VAT correctly charged in the UK please see the following guidance:
Refunds of UK VAT for non-UK businesses (VAT Notice 723A).
Thank you.