It will be the Kingfishers’ fourth different league in as many years.
Penn & Tylers Green, who won the Division One title, and play-off winners Bedfont will also be on City’s 2026-27 fixtures list, as will Easington Sports, Northwood and Rayners Lane.
Northwood and Rayners Lane have been relegated from Southern League Central Division, while Easington were successful with their lateral move application from the United Counties League, where they finished 16th in Premier Division South.
There is also a reprieve for Amersham Town who finished in the relegation zone.
Maidenhead Town, who groundshare with Burnham, have been elevated from the Step 7 Thames Valley Premier League to CCL Division One, where their opponents will include Woodley United.
Belstone, Bovingdon and Edgware & Kingsbury are also in Woodley’s division for the first time, while Rising Ballers Kensington have escaped relegation.
Reading City’s Sunday side rounded off a sensational first season in the Reading Sunday League by lifting the John Lusted Cup & Shield.
A first-half goal from Will Stantiford was sufficient to earn them a 1-0 victory over FC Woodley in the final at Rivermoor Stadium.
Charlie Wyeth’s side were also presented with the Division Four trophy on the day, having secured the title by winning all 20 of their games, finishing 10 points clear of runners-up Woodley.
The Division Three champions, 116 Exiles Reserves, missed out on a double, losing 4-1 to The Volly, who finished third, in the Industrial Cup & Shield final, which was also played at Rivermoor last Sunday.
* Westwood Wanderers kept on course for a fourth trophy of the season by defeating Yateley United A 2-0 in the Thames Valley Premier League’s FA Cup competition, their goals coming from Junaid Bell, after 13 minutes, and skipper Jamie Porter seven minutes into the second half.
The Premier Division champions were quickly following up their 5-0 victory at Cookham Dean, where Porter (2), Harry Luffrum (2) and Aqeel Butt all found the back of the net at Alfred Major Rec.
Devonn Reid’s men next play league runners-up Wargrave, who beat AFC Reading 3-1 thanks to strikes from Callum Brighton, Charlie Douglas and George Hepburn.
The tie is scheduled for this Saturday (5pm ko) at Rivermoor Stadium, following the game between Tadley Calleva Reserves and Holyport Reserves which kicks off at 1pm.
Tadley made progress by defeating Reading YMCA 1-0 thanks to Ashton Swinhoe-Nevola, and Newbury Town 3-1, with goals from Luke Danton, Tiago Moreno and Adam Platten all on target.
Jack Morgan scored in the 62nd minute as Division Four runners-up Rotherfield United Development defeated Division Two side Maidenhead Town Development 1-0 in the Berkshire Trophy Centre Junior Cup final.