What type of lizard is this?

What type of lizard is this?

Observation - What type of lizard is this? - UK and Ireland. Description: Saw this lizard today basking in some sunshine. About three inches long. Dark in colour. There was another, slightly bigger. What type of lizard is it?

Saw this lizard today basking in some sunshine. About three inches long. Dark in colour. There was another, slightly bigger. What type of lizard is it?