From the council report linked to above.

Human Rights Considerations
5.1 Mr Gall has argued that by requiring the premises at which sessions take place to obtain a PEL Council officers are interfering unlawfully with his right to freedom of expression contained in Article 10 of the European Convention on Human Rights.

As has been explained to Mr Gall, the right to freedom of expression is not an absolute right under the Convention. By applying the relevant licensing the Council has imposed conditions and restrictions on Mr Gall's rights which are legal, necessary and proportionate in the in the interests of public safety, control of nuisance and the prevention of crime and disorder.