Further cut and paste from Wikipedia: -

"Photography and privacy[edit]

"No photographs" sticker. Designed for persons at conferences who do not want any digital likeness of them taken, including video, photography, audio, etc.
A right to privacy exists in the UK law, as a consequence of the incorporation of the European Convention on Human Rights into domestic law through the Human Rights Act 1998. This can result in restrictions on the publication of photography.[28][29][30][31][32]

Whether this right is caused by horizontal effect of the Human Rights Act 1998 or is judicially created is a matter of some controversy.[33] The right to privacy is protected by Article 8 of the convention. In the context of photography, it stands at odds to the Article 10 right of freedom of expression. As such, courts will consider the public interest in balancing the rights through the legal test of proportionality.[30]

A very limited statutory right to privacy exists in the Copyright Designs and Patents Act 1988. This right is held, for example, by someone who hires a photographer to photograph their wedding. The commissioner,[34] irrespective of any copyright which he does or does not hold in the photograph[34] of a photograph which was commissioned for private and domestic purposes, where copyright subsists in the photograph, has the right not to have copies of the work issued to the public,[35] the work exhibited in public[36] or the work communicated to the public.[37] However, this right will not be infringed if the rightholder gives permission. It will not be infringed if the photograph is incidentally included in an artistic work, film, or broadcast.[38]"