Started with removing the dynamo (strangely enough:-))
Please note that the dynamo may foul the distributor.
Got around this by loosening it off and turning it away from the dynamo.
The dynamo was then removed.
Tried a few test fits of the altenator with the various parts of the existing dynamo bracket.
It would appear the best way to do this is to remove all the existing bolts etc (including the large one in the alternator and dynamo picture above) and replace them with two different size bolts and a large amount of washers to ensure all the pulleys line up.
The Herald fan belt will also now be too short, I’ll pick up an new one when I get the bolts.