I’ve no idea of any differences between the British and Canadian built Ansons, as far as individual parts go, but the numbers you have supplied do conform to the Avro part number system.
For example, the first number supplied, 26R1999, the 26 represents the Item number on the drawing, R represents flight control systems and the 1999 is the drawing number.

Many Thanks Avro Avian,

So i take it that all the parts for the Anson were sourced from the same parts source.

The control wheel itself had been purchased from Canada, but i know that some British built Ansons were supplied to Canada at the early part of the War,so was interested to know if the control wheel had possibly originated from Britain.

regards Brad.