Hello Jim,
I found these two articles about HMT Lancashire in 1954. Is this the voyage that you are looking for? There is no mention of the departure date from Japan, presumably it was sometime in August.
The Times dated 27 August 1954 reported:
Death in Troopship
From Our Correspondent
Liverpool, Aug 26
Liverpool detectives will board the troopship Lancashire, now on her way from Japan, when she reaches the Mersey early on Monday, to make inquiries about the death of a member of the crew. The captain of the ship radioed the Liverpool managers, and the next of kin of the dead man have been informed.
It is understood he was the ship’s butcher, and that his death followed an incident involving other members of the crew.
The Times dated 30 August 1954 reported:
Detectives Meet Troopship
Liverpool detectives left the Mersey by tender yesterday to meet the troopship Lancashire from Japan to make inquiries into the death of a ship’s butcher named William Crellin, of Mossley Hill, Liverpool. Statements will be taken from members of the crew. The Lancashire is due in Liverpool early this morning. A Liverpool solicitor will meet the ship on its arrival.
Regards
leighton