Complex sentence: On 20 April 2008 he was the first-ever commentator at Great Leighs Racecourse, Britain's first new racetrack for 81 years, and he shares commentary duties with Mark Johnson at race meetings in Jersey and Guernsey.
Split into simpler sentences: On 20 April 2008 he was the first-ever commentator at Great Leighs Racecourse, Britain's first new racetrack for 81 years. As well as commentating at racecourses in the UK, he shares commentary duties with Mark Johnson at race meetings in Jersey and Guernsey.