Hi smart-biz-intern
If you are registered for VAT in the UK and sell and purchase goods throughout Europe you can allocate the EC codes against the transactions. When you set up your EC customers you will have to enter a country i the address section and also tax number, this will then appear on on the VAT 101 report.
If you are registered for Tax in an EC country as well as the UK you can set up additional tax agencies, Taxes > Add tax > Custom tax enter the relevant details and tax percentage. When you create a transaction the tax code will appear in the VAT column drop down menu as the percentage you entered with the name of the new tax agency in brackets.