Stray dogs can cost the owner over £160 to re claim, if found straying outside of office hours.
It is a legal requirement to ensure that your dog has a collar and tag with current address / telephone number details (Control of dogs Order 1992. Max £5000 fine).
Many people also microchip their dog as a form of permanent identification, but many forget to update details when they change address / telephone number.
You can update details at the PetLog website.
You can also put holiday contacts for when away from home.