I wouldnt bother with the grant now, its only £350, ive been getting pretty crappy quotes for a fairly standard install, so i ended up going down the self source and got a local spark to come and do the final hook up and test and then certify.
Cheapest quote i had was 750 after the grant, going down the self source route you can expect to pay half that. Imo its a bit of a bandwagon at the mo, the ev specialists have plenty of work, so they can afford to chuck out high quotes.
Podpoint are doing tethered 7Kw for £449. It was £299 before the OLEV changed.
What would you say the installation costs excluding the charge point should be - ie a run of say 5m from a meter box, obviously including the mini CU within the meter box? Cheapest chargepoint I can find is a QUEBEC one for £229, though it doesn't have great ratings.
I've seen the OHME charger, which you just plug into a commando socket, could be an option, in a way not much different to an untethered chargepoint really.
I would like one, though to be honest I'm ok with the included 10amp plug in. I don't use the car daily for work so it is really just top up charges a couple of times a week for a few hours, then the odd very long charge after a long journey, maybe over a couple of days as I don't like hanging the cable out of a downstairs window!
But that's the trouble with these sort of subsidies, it was the same with Solar PV, the installers just treat the subsidy as their extra "bunce".