Kent off-spinner Hamid Qadri extends his contract with the club until the end of 2024.
Keaton Jennings will take over from Dane Vilas as Lancashire captain across all three formats for the 2023 season.
Glamorgan will stage two one-day fixtures at Neath in 2023 but plans to return to Colwyn Bay are delayed again.
Somerset re-sign former Australia fast bowler Peter Siddle on a deal to play in the County Championship and T20 Blast until the end of July.
Hampshire bowler Jack Campbell signs a contract to stay at the club until the end of the 2023 season.
Sussex batter Tom Clark signs a contract extension with the club.
England Lions spinner Jake Lintott signs a new contract with Warwickshire to tie him to Edgbaston until 2025.
Australia batter Steve Smith will warm up for this summer's Ashes with a stint at Sussex in the County Championship.
Sussex sign Pakistan leg-spinning all-rounder Shadab Khan for the 2023 T20 Blast.
West Indies fast bowler Jayden Seales will no longer join Sussex for the start of the 2023 season after suffering a knee injury.
Gloucestershire fast bowler Ajeet Singh Dale signs a two-year contract extension with the county.
Nottinghamshire seamer Brett Hutton signs a new two-year deal with the promoted Division One side until 2024.
England fast bowler Tymal Mills agrees an extension to his Twenty20 contract with Sussex.
Leicestershire opener Sam Evans signs a contract extension with the county for the 2023 season.
West Indies bowler Kemar Roach is returning to Surrey for the first six games of the 2023 County Championship season.