Hi Firstpointswm,
If you are supplying a printing service then the Place of Supply Rules determines where the service is deemed to take place..
The service would come under the General Rule of services and so the Place of supply is where the customer belongs.
If the customer belongs in the UK then the supply will be Vatable in the UK.
If the customer belongs overseas then the Place of supply is Outside the Scope of UK VAT.
Please see the guidance here:
6. The place of supply rules for services
It is therefore important to determine where the customer belongs for the supply.
Please see the guidance here:
Place of supply of services (VAT Notice 741A)
Thank you.