Stealing a dog from its owner is a crime under UK law. Dog theft carries a potential sentence of up to seven years in prison under the Theft Act 1968. Recently, there has been a petition to the government in order to increase the potential sentence to eight years, with a minimum fine of £5,000.
Useful link(s) Information (Dogs Trust.)
https://www.dogstrust.org.uk/shopping/our-partners/
https://www.dogstrust.org.uk/help-advice/dog-care/
https://www.dogstrust.org.uk/latest/issues-campaigns/
https://www.dogstrust.org.uk/latest/events/filters/~~~~~01-07-2020~~~~~cuac
Blue Cross
https://www.bluecross.org.uk/?msclkid=3a00d900ad9111ec8d38abb31b37d8e3
Crime Stoppers
Gov.UK