Ireland tour

The Irish team played two ODIs against England in early May in advance of the Champions Trophy. England won both matches.

South Africa tour

The tour by South Africa included matches played either side of the Champions Trophy. In late May, immediately before the start of the Champions Trophy, a three match ODI series was played, with England winning the series 2–1. After the tournament a three-match T20I series was played, England again winning 2–1.

The four match Test series between the two teams took place between the beginning of July and early August. England won the series 3–1.

West Indies tour

The West Indies toured England in August and September. Three Test matches were played, England winning the series 2–1. The series included the first day-night Test match to be played in England. A single T20I and a five match ODI series were played after the Tests, England winning the ODI series 4–0 whilst West Indies won the T20I. The final match of the ODI series was played on 29 September and was the final match played during the season.

MCCU Matches

The season began with three rounds of first-class cricket matches played between first-class counties and the six MCC University sides. Each MCCU side played two matches, each against a first class county, between 28 March and 9 April.

County Championship

The men's County Championship saw a restructuring of the divisional structure for the start of the season. Division One was reduced to eight teams at the end of the 2016 season in order to reduce the number of Championship matches each county played to 14. Ten teams competed in Division Two for the first time, meaning that Division Two sides did not play each other home and away during the season.

Essex, who had been promoted from Division Two the previous season, won the County Championship. Middlesex, the 2016 Champions, and Warwickshire were relegated from Division One, with their places taken by Division Two champions Worcestershire and Nottinghamshire, who narrowly beat Northamptonshire to the second place spot in the division.

Middlesex's relegation from Division One was controversial. The club had been deducted two points for bowling a slow over rate during a match against Surrey at The Oval at the end of August in a match which was abandoned early when a crossbow bolt was fired on to the pitch.^[2] At the time Middlesex were batting but could have declared and made up the over rate in Surrey's second innings. They lost to Somerset on the final day of the season, with Somerset just one point above Middlesex in the table. The pitch at Taunton was investigated after Wayne Noon, the ECB cricket liaison officer at the ground for the match, marked it as "below average" for excessive spin on the first two days of the match – a factor which, it was suggested, would help Somerset's strong spin attack.^[3][4] No action was taken over the pitch quality after a further inspection took place,^[5][6] despite it being described as "doctored" and Somerset being called a "disgrace" by Middlesex's Chief Executive Angus Fraser.^[4] Middlesex subsequently appealed the decision to deduct the two points for the slow over rate at The Oval but the appeal was rejected by the ECB.^[7]

Royal London One-Day Cup

The Royal London One-Day Cup took place between April and July, with the eighteen counties organised into two regional groups. Nottinghamshire and Surrey advanced to the final, with Nottinghamshire winning the title.^[15]

NatWest t20 Blast

The T20 Blast took place between July and September, with the eighteen counties organised into two regional groups. Nottinghamshire beat Warwickshire in the final to claim their second title of the season.^[16]

Women's County Championship

The Women's County Championship was won by Lancashire, the county's first Championship title. The runners-up were Yorkshire.^[17] The season was the first with a changed format of three divisions with Division Three split into four geographic groups, replacing the previous system of four divisions.

Women's Twenty20 Cup

The Women's Twenty20 Cup was won by Lancashire, the county's first Twenty20 title. Middlesex finished as runners-up.^[18]

Women's Cricket Super League

The second edition of the Women's Cricket Super League took place in August and September. The final was a repeat of the previous season, but this time Western Storm beat defending champions Southern Vipers by 7 wickets.^[19]

Minor Counties Championship

The 3-day Minor Counties Championship ended in August, with Berkshire beating Lincolnshire in the final.^[20] Berkshire also won the 50-over MCCA Knockout Trophy.^[21]