The casualty recovery dice rolls turned out to be not as bad as I feared for the British although Yule's Maxim Gun was lost (my original recovery rules allowed for full recovery of British artillery but I decided to change this to make it the same as the Boers). The revised strengths of all the units involved are given below:
Following the battle I determined that the Boers would withdraw to hex 1407 and the British would advance to hex 1507.
As the campaign has developed I can see that the original victory conditions I set are a bit vague and it's unlikely either side could achieve them so I am reformulating them as follows:
The campaign progresses until one side has 20VP more than the other. VPs are awarded as below: