If you want to know whether a trademark is already registered in United Kingdom simply use the trademark search in United Kingdom and you'll find there the answer. This is a search engine trademarks offered by the Trademark Office of this country that allows us to know whether a trademark is already registered in the same way in this country. Keep in mind that the result provided does not include similar marks which can also be a problem when registering your trademark in this country. For this reason it is important to hire the services of a professional to confirm that there is no impediment to register your trademark in United Kingdom.