Hi there I was also apprehensive about getting a charger fitted nevertheless I did the the survey for Ohme which entails you making a little video of your meter position and where you want your charger fitted and upload a sketch after I did this they said they might after charge extra as they would have to put an additional switch in as my electric board and everything was lot older than yours I don’t think you would have a problem I only had to wait a week for them to come and fit it they did put an extra switch in as my fuse box had none spare they were at my house less than an hour and they didn’t charge me extra for the added switch the sparky told me I was his fifth one and he had one more to do that day so my advice is as long as you have off street parking don’t over think it just crack on and don’t forget if you haven’t got a smart meter yet get one booked in I got my charger first and I’m about to get my smart meter fitted only had to wait 3 days for that then I can charge anytime for 10p a kw with OVO it’s definitely not worth the hassle charging any where else than home apart from on the motorway which it does cost a lot but they are fast chargers but I’m not too worried about that with all the savings you make the rest of the time and you only have to charge enough to get you home for a non motability customer there’s a lot to consider especially depreciation but for a motability customer it’s the only way to go