How long does your legal copyright last (UK)?

• Music and Sound recordings : 70 years from the date it was originally published
• Written, dramatic, musical and artistic works : 70 years from the death of the author
• Films : 70 years from the death of the director, screenplay author and composer
• Broadcasts : 50 years from the date of original broadcast
• Databases : 15 years from when the database is made or, if the database is published during this time, 15 years from publication
• Layout of published editions of written, dramatic or musical works : 25 years from the date it was originally published

Source: https://www.gov.uk/copyright