Hi Trumpy
Arrangements for main fuse are the pretty well the same as in Paul's part of the world.
PoCo installs main fuse (their property)before the meter, where the service enters the building.
Providing you install the consumer unit or distribution board within 3 metres of the meter, and the tails are the appropriate size (25mm for 100A supply) no additional main fuse is required.
I'm drowning in work at the moment & working all hours, but when I get a chance I'll post some pics of our installations.
