[5][6] He made his debut for the senior Kent team in their final match of the tournament against West Indies under-19s on 12 February 2017.

[1][15][16] Robinson was selected for Kent's squad for the 2017–18 Regional Super50 competition ahead of the 2018 English season but did not play as the county advanced to the semi-finals of the tournament.

Good scores for the Second XI at the start of the season, including a double century,[17] saw him selected again by England under-19s in June for a series of Test matches against South Africa under-19s.

[18] After being involved on the fringes of the First XI in a number of matches, Robinson made his first-class cricket debut for Kent in August 2018 in the County Championship at Leicester.

[19][20] He scored his maiden first-class century against Warwickshire in April[21] and signed a contract extension in June 2019, following interest from other counties during the early part of the season.