Compton also played cricket for Middlesex, often playing as wicket-keeper from 1938 to 1956. He appeared 272 times, scoring 5,814 runs (an average of 16.75), and taking 468 catches and 131 stumpings for the county. Together with his brother, he won the 1947 County Championship title with Middlesex, making them the only brothers ever to have won the national title both in football and cricket. Unlike Denis though, Leslie never played Test cricket for England.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Wickets | Bowl Avg | Best Bowling | Catches/St |
| First-class | 274 | 5,814 | 16.75 | 1/24 | 107 | 12 | 47.41 | 2/21 | 470/129 |