In some countries, it's illegal for trademark and patent attorneys to advertise. Is it also the case in the UK?
The Patent Regulation Board of the Chartered Institute of Patent Attorneys and the Trade Mark Regulation Board of the Institute of Trade Mark Attorneys working jointly together as the Intellectual Property Regulation Board (IPReg) have the following rule in their Code of Conduct:
Rule 18 – Publicity Publicity and promotional activity of any kind by regulated persons is permitted if it is fair, honest, accurate and is not misleading and is not otherwise in breach of these Rules.
There is additional Guidance in that file.
IPReg is the independent regulatory body for the trade mark attorney and patent attorney professions in the UK.