To be honest it was mainly due to cost, the Tesla charger / AC power unit costs around £400 and is not available with the government grant.
With the government grant I was able to purchase and have installed the Rolec AC power unit for only £190 it came with a 5 metre tethered cable which plugs directly into the Tesla.
I've been using it for a week now and it works flawlessly. The great thing about the Rolec AC power unit is that all the parts inside are completely off-the-shelf.
So when the warranty runs out if any of the parts break, new parts can be purchased from any electrical wholesaler. Also the cables can be switched out so if i ever get a different car
which uses a different connector it wouldn't be a problem.
I can even change the tethered cable for a socket, just in case my husband decides to buy his own electric car which he's thinking about doing, this would probably be the new
Electric Jaguar which will probably use a different type of connector.