 Subject to the licensee's responsibility to ensure safety and nuisance to others, you can express yourself verbally in a public house.

 Subject to the above and with the licensee's permission you can also express yourself musically in a public house, without further licensing, such as a Public Entertainment Licence, being required.

 This licensing legislation is for the safety and interests of all members of the public, at staged Public Entertainment with performers. It can really serve no useful purpose when, it is stretched to be used to against and to limit the freedom of expression of, those very same members of the public in establishments where, their safety and interests are already ensured by the council's other statutory duties.