You can contact Customs National Advice Service on !!!08450 109000!!! (Lielbritānija) and ask them to verify the number for you. They have access to a European-wide database known as VIES (VAT Information and Exchange System) which gives details of all VAT registered business throughout Europe by accessing the member states databases.
When you ring Customs, they will ask for your VAT number. This is only so that he has a record of your query if you later need to verify that you have made the check. If you ask for one, they will also give you a unique reference number for the query for you to keep in your records. Next, they will ask for the country and VAT number of the customer that you wish to check. !!!They will then be able to confirm the name and address of the customer, or tell you that it is an invalid number.!!! Because the system relies on a system of interfaces between national computer systems, they can sometime “go down” or become overloaded. If this is the case, just ring back again later.
Ja nav ko darīt (kā man patlaban), tad var sakontaktēties ar Customs National Advice Service.