Timetable from Norwich Thorpe station to Wroxham in 1932?

[spod]

I wonder if anyone can help me working out the possible times of a train from London via Thorpe Station (Norwich) to Wroxham on Friday 22nd April, 1932!

The known details are as follows:
1) The trip was via Colchester and Ipswich (I assume that means from London) on the same day.
2) There was a wait at Norwich Thorpe Station, for the locomotive to go to the other end of the train. So I assume that means that the same train went on to Wroxham, rather than a change of train.
3) The train arrived in Wroxham before lunch (i.e. sometime before 1pm?).

I'm trying to find out the leaving and arrival times for London, Norwich and Wroxham that fit a journey like that on that date.

I'm fairly sure that the date is correct, but it is possible that it could have happened on Saturday 23rd instead of the 22nd. I know that 9 days later (Sunday 1st May, 1932 - if the 22nd is the correct date for the first journey) a train went from Norwich to London at 9:01 in the morning. Does that help to confirm the date? In 1932, did a train go from Norwich to London at 9:01 on Sundays, or only weekdays? If such a train only ran on weekdays, then the date for the first journey must be Saturday 23rd April, 1932.

To explain: The trip is described in the book 'Coot Club' by Arthur Ransome, which takes place in 1932. He is known to have researched timetables etc to make sure that he got things correct in his novels, so I expect that he based it on real train times. The exactness of the 9:01 train seems to make this likely, unless he just chose that weird time for effect!