[2] In these, he scored 246 runs at an average of 12.94,[3] though at this early stage in his first-class career he did not keep wicket,[4] with A. J. Webbe being Middlesex's long-established wicket-keeper.

While playing for Middlesex in 1883, Robson also appeared in a first-class match for the Marylebone Cricket Club (MCC) against Sussex.

[2] He was a member of Ranjitsinhji's team which toured North America in 1899,[8] in which Robson made two first-class appearances against the Gentlemen of Philadelphia.

J. G. Greig opened the batting and the Hampshire score had reached 374 for 9, with Robson, who was batting at number eleven, putting on 113 for the tenth wicket, with Robson contributing 52 runs alongside Grieg's unbeaten 249 not out; their endeavours ensured Lancashire had to chase 181 in 140 minutes, but rain intervened with Lancashire having reached 111 for 5.

[2] His association with London County continued after the stepped back from playing for Hampshire, with him making a further three appearances for the team in 1904.

[2] In the spring of 1895, Robson was appointed manager-secretary to Southampton St Mary's Football Club, then playing in the Southern League.

[20] One of Robson's first acts as secretary was to accompany Alfred McMinn, one of the club committee members, on a trip to The Potteries to recruit players.

[21] On this trip, Robson and McMinn signed six players: Jack Farrell, Samuel Meston and Willie Naughton from Stoke, Watty Keay from Derby County, Joe Turner from Dresden United and Alf Wood from Burslem Port Vale, as well as recruiting Stoke's long-serving trainer, Bill Dawson.

[19][21] At the end of the 1895–96 season, Southampton had to vacate their Antelope Ground home, which had been sold for re-development, and moved to the County Ground at Newlands Road, partly through the connections of the club's president, Robson's former Hampshire opening partner, Russell Bencraft, who was also Honorary Secretary to Hampshire.

[22] Robson was one of the founder directors when the football club was incorporated into a limited company, "Southampton Football and Athletic Company Limited" in July 1897; on the Memorandum of Association he was listed as "Charles Robson, Mineral Water Merchant and Hampshire wicket-keeper" of Hill Lane, Southampton.