Hi Amazo,
If a General Rule Service is charged by an overseas body then it can only be subject to the reverse charge where the UK business customer belongs in the UK.
If the UK business customer doesn't belong in the UK then the reverse charge will not apply and VAT would only be charged if the Place of Supply Rules determine
that the Place of Supply is in the UK.
Please see below:
6. The place of supply rules for services
Thank you.