Hi Brian,
That's useful to know because I bought mine online from eGlobalcentral so I don't have a VAT receipt; it looks like I will have to live with the problem unless there is a firmware fix.
I had bought a grey import before, a D70, albeit second hand, and the Nikon website refused to accept its registration on the grounds that it hadn't been sold in the UK. With my D5500, the website did accept its registration so I had assumed that it would be covered.
I paid £374.29 for mine with an 18-55 lens (which I don't use) at the end of August so it's swings and roundabouts, I suppose.
I think the strategy of paying minimal price and accepting any losses has paid off in the long run. I have never paid for an extended warranty or phone insurance and I think that has saved me thousands which would have paid for many of the things I have bought to be replaced with new items if they failed out of warranty. I will file my experience with the D5500 in the same place. But that's just my philosophy; why pay companies to manage my losses and make a profit from me in doing so?
Also, I have a quite strict policy of stopping looking at specifications and prices after I have bought something as I know that they are always going to get better and cheaper.
Sorry to hear of your experience with Nikon but it looks like they are going to deal with it or at least investigate. I have noticed a steady decline in customer service in the last few years. One company I dealt with had a three year warranty on their hardware but they would only diagnose a problem under their technical support warranty which only lasts three months - so to get a hardware fault diagnosed, I would have to pay for an extension to the technical support warranty. I returned the item, a NAS, to the shop where they took out the HDDs I had bought separately and gave them back to me and then returned it for replacement but they cocked up the paperwork and as a 'replacement' sent another one of the HDDs they had taken out which was significantly cheaper than the NAS - on paper, an item had vanished into thin air and another one had magically materialised and they were refusing to accept that they were at fault and I was accused by a member of staff of trying to perpetrate a fraud. Eventually, I did get a refund but I am stuck with the removed HDDs which are redundant on their own until I buy a replacement NAS.
As far as the problem goes from my point of view, currently, it only seems to exist to a noticeable extent when I am using live view and taking photos of mushrooms; i.e. it seems very difficult to pin down.
I hope you get yours sorted out soon.