It was whilst the ship was in Aden, the Second World War commenced.
10th August 1939 - MANCHESTER and GLOUCESTER in company the sloops EGRET and FLEETWOOD left Aden to escort a six ship troop convoy en-route from Bombay through to Egypt, returning to Aden on completion.
3rd September 1939 - MANCHESTER and GLOUCESTER sailed from Aden for Colombo.
9th September 1939 - Sailed from Colombo for patrol duties.
14th September 1939 - Returned to Colombo.
21st September 1939 - Arrived at Bombay from Colombo and left same day for patrol duties.
MANCHESTER was subsequently detailed to return to the United Kingdom to act as flagship of the 18th Cruiser Squadron, Home Fleet.
10th November 1939 - Sailed from Bombay.
13th November 1939 - At Aden.
17th November 1939 - At Port Said.
18th - 20th November 1939 - At Malta, where Vice Admiral Geoffrey Layton hoisted his flag on assuming command of the 18th Cruiser Squadron.
22nd November 1939 - At Gibraltar.
25th November 1939 - Arrived at Portsmouth for a short refit.
23rd December 1939 - Sailed from Portsmouth for Scapa Flow.
24th December 1939 - Arrived Scapa Flow.
26th December 1939 - Sailed from Scapa Flow to relieve SHEFFIELD on Northern Patrol duties (date of return not known).
15th January 1940 - Sailed from Scapa Flow.
20th January 1940 - Intercepted the Norwegian ship SS "LISA" and ordered her into Kirkwall for examination.
27th January 1940 - Arrived back at Scapa Flow for boiler clean.
2nd February 1940 - Sailed from Scapa Flow.
12th February 1940 - Returned to Scapa Flow.
15th February 1940 - Sailed from Scapa Flow.
21st February 1940 - In company with the destroyer KIMBERLEY, intercepted the German steam ship "WAHEHE" in position 620.50N, 14.20W south of Iceland. KIMBERLEY towed WAHEHE to Kirkwall where she was renamed EMPIRE CITIZEN. She was sunk in the North Atlantic a year later.
2nd March 1940 - Sailed from Scapa Flow for Northern Patrol duties.
12th March 1940 - Returned to Scapa Flow.
18th March 1940 - Sailed from Scapa Flow for Northern Patrol duties.
28th March 1940 - Returned to Scapa Flow.