Copyright notices are published by the Intellectual Property Office to help explain specific areas of copyright in the UK.
This notice provides advice for anyone wishing to understand how long copyright protection lasts. It also provides useful information on how to obtain permission to use works, or when permission is not required. This notice is not meant as a substitute for legal advice, but to help readers gauge the likelihood of works being within, or not within copyright protection. It is not a conclusive view of the law – only a decision of the court can deal with that.
https://www.gov.uk/government/publications/copyright-notice-duration-of-copyright-term
Content Reproduced verbatim from the Website of the United Kingdom Intellectual Property Office (UKIPO) as permitted under their Terms of Use.