Thank you, Col. You've just proved two things

1. My aircraft recognition leaves a great deal to be desired, the aircraft is indeed a Beaufort.
2. Never believe all you read on the Internet - which pointed to 35 Flight SAAF and Blenheims

The airfield shown in the photo may be at Tananarive (now Antananivo) as there is another photo in the series showing SAAF vehicles in the town.

Grateful for you help.