If the company is registered in an EU country, you'll have many of the same rights as you would if you'd bought from a British company, including the Distance Selling Regulations, which say:

• The seller needs to give you clear information - there should be no hidden conditions or expenses
• You get a seven day cooling-off period during which you are allowed to change your mind and cancel the order. This doesn't always apply, though - you can't return perishable goods, for example
• The goods should be delivered within 30 days, unless you've agreed otherwise.

You can also register a complaint with www.econsumer.gov - a web-based service that deals with cross border consumer complaints in Europe.

Please note the BBC is not responsible for the content of external websites.

Ask your local Citizen's Advice Bureau or Consumer Direct for advice on making claims from European suppliers.

Keep a record of any transactions and agreements.

Be warned that it may be more difficult to get your money back from a company based outside the UK, even with the law on your side. If the company is outside the EU, it will be more difficult again.