A Trade Mark can be any sign, normally represented graphically

The British Government (Department of Business, Energy and Industrial Strategy, Department for Exiting the European Union and the Intellectual Property Office) has issued new guidance in the event of a no-deal Brexit. The guidance covers changes to domestic Designs and Trade Mark laws if the UK leaves the EU without a deal. Further guidance is expected as the proposed date for Brexit looms – the following is what we have for now:

https://www.gov.uk/government/publications/changes-to-design-and-trade-mark-law-if-the-uk-leaves-the-eu-without-a-deal