I expected to enjoy this from the Radio Times write up, and eventually I did, but found it slow to get going. Once he arrived in Africa it became much more enjoyable and interesting. I would have liked another minute or two looking at the reasons for the movement of the Kenyan Asians to Britain. It was a different approach looking at it from the point of view of someone who had a fairly solid knowledge of the family history, and was confirming and expanding that knowledge rather than just having 'a story' which has often been the case. And even getting the 'story' (about royal connections) confirmed!
As others have said, it proves the importance of talking to older relatives, and I thought it also showed how cultures with a tradition of oral history can be very valuable to social historians. I just wonder how much that tradition is still surviving into younger generations in Africa. Growing up I had little knowledge about either side of my family, and I query how much my cousins, nephews and nieces would know even about my grandparents' generation without the bits I keep passing on ... no real tradition of oral history!