Teams Oliver Smithson played for

Second Eleven ChampionshipGloucestershire Second XI (2014)
 Marylebone Cricket Club Young Cricketers (2015-2018)
 Durham Second XI (2017-2018)
 Northamptonshire Second XI (2017)
Second Eleven TrophyGloucestershire Second XI (2014)
 Marylebone Cricket Club Young Cricketers (2016-2018)
 Durham Second XI (2018)
 Northamptonshire Second XI (2018)
Second Eleven Twenty20Marylebone Cricket Club Young Cricketers (2015-2018)
Home Counties Premier LeagueDatchet (2019-2024)
Under-17 County ChampionshipGloucestershire Under-17s (2013)
Cricketer CupBradfield Waifs (2014-2025)
MiscellaneousBradfield College (2012-2014)
 Berkshire Academy (2013)
 Datchet (2013-2022)
 Gloucestershire Second XI (2014-2015)
 Cross Arrows (2014)
 Marylebone Cricket Club Young Cricketers (2015-2017)
 Marylebone Cricket Club (2019-2024)