The Home::1 service is only for domestic customers and is not available to anyone that is VAT registered or at a commercial premises. We have a business package for such customers.
However their SOHO::1 service does have a VAT Invoice
Small business service
The SoHo::1 service is aimed at small business customers but can be purchased for home use (bear in mind prices on this page are VAT exclusive). It is very similar to our Home::1 domestic package. The main differences (apart from VAT invoices) is availability of additional legacy IPv4 address, a 2TB high usage option, and an option to make use of our VIP line monitoring service where our tech support staff will be alerted if your line is down (during office hours).
Hope that the above helps.
Andrews & Arnold FTTC
DrayTek Vigor 2920Vn
Andrews & Arnold Data SIM