Thank you for all the responses. My apologies if my situation was unclear, this is possibly in part due to the fact that I am still trying to work it out!. Surfer01 you have summarised brilliantly for me.
Re: Help False MOT claim by Mercedes on Approved Used Mercedes - Drove car without valid insurance as a result
The OP bought the vehicle from Mercedes Portsmouth but the vehicle came from Mercedes Blackburn. Mercedes Blackburn in writing stated that the vehicle would have a MOT, but this did not happen. However the selling dealer Mercedes Portsmouth should have checked that the vehicle had a MOT for longer than 9 months. Mercedes Portsmouth are the selling dealer and not Blackburn or Mercedes themselves therefore the issue is with Mercedes Portsmouth and no one else as your contract is with them.
I bought the car from Mercedes Portsmouth (I went into the dealership looked at models they had there but then choose one from the online listing). It was located at Mercedes Blackburn. It was the Mercedes Portsmouth sales man who informed me the car would be MOTed then shipped down to Portsmouth. Mercedes claimed then and still claim all used approved come with at least 9 months MOT. I was told verbally and when I paid for the car I was given a document labelled purchase confirmation which is essentially an extended invoice on that document it says the car has an MOT from 22/12/17 to 23/12/18. I was also given another document saying that as with all used approved Mercedes the car would have at least a 9 month MOT, this was sort of a tick box document for part of the sale, the box for greater than 9 month MOT was ticked the purchase invoice says from Dec 2017 - 2018. I never spoke to Blackburn directly. It is my understanding that Portsmouth ownership has changed. I was told the manager at Blackburn had changed and this was part of the reason that no information on my cars supposed MOT could be found (this sounded odd but this is part of the problem I can't get any information).
I appreciate the time of everyone who has replied to advise me. I work long hours so only just had a chance to read through. I take all comments onboard including the fact I may be overreacting but I am just trying to get to the bottom of this and using the usual customer complaints route has not worked. It may well be an admin error, it might be that Mercedes in Blackburn who were supposed to have MOTed the car failed to update the government central database. I have asked Mercedes Portsmouth (the purchase retailer) and Mercedes central this multiple times and I have been told that due to the time elapse between Dec 2017 and the time of my question Nov 19th 2018 the records have been archived and they can not answer this question. I have this in writing from Mercedes Portsmouth. Mercedes central are just saying that they consider the matter closed with no answer provided to my questions and telling me I have to talk to the Ombudsman.
It is has someone has pointed caused out relatively little harm but I am a doctor and as for many other professions and an non speeding motoring offences can have a career effect. In my situation non speeding offences are reportable to the General Medical Council who have a reputation for acting first and getting the facts latter. Most motoring offences by doctors result in some sort of investigation which at best would stay on record as not being compliant with GMC rules (these stretch beyond clinic practice). I did actually get a speeding ticket whilst I had no MOT, I was in roadworks on the motorway, I have since done a speed awareness course as no previous points and so far nothing has come of this but technically at this time my car had no provable MOT but there is now both proof of my being on the road (fine and camera) and proof of the MOT gap (government database).
Regarding the damage I suspect I will just have to fix this myself. My car is a SLK, I think it may be a little more than £120, Mercedes Portsmouth have hinted at a lot more but to me these look superficial. Anyway I had anticipated this pretty much from the start however Mercedes centrals immediate and final response when I raised the MOT issue without mentioning the bumper damage was no harm no foul and to close the response, I wasn't happy this was a sufficient explanation and and I wanted to highlight that actually this did have implications, both the ones described above some of which I acknowledge are theoretical and the implications for this minor damage in regards to my insurance.
I did ask about sueing Mercedes but to be honest I don't want to sue anyone I just want someone at Mercedes to listen to me and to investigate this. I don't understand why they can't find out what happened in Blackburn. I have asked about the legal issues around this in the hope that if for instance there was a law whereby garages that do MOTs have to store records for x amount of years or for instance that selling a car with incorrect MOT paperwork was breaking a law I would be able to use this to force Mercedes into looking into the matter. I note the comment about what my losses would be and the answer is probably not very much. There has been the fact I had to rearrange work to get the urgent MOT, the damage I can not claim but th problem is more the uncertainty this has now created in regards to what is on record and what other pre sales servicing might have been skipped.
I may have to chalk this up to one of life experiences but it doesn't feel fair (I know lifes not!) but at the moment I am still keen to try and get this investigated so that if the car genuinely was MOTed the government database can be updated to reflect this as there is evidence I drove from April - Sept as I got a speeding fine. Or if my car did not have an MOT then I would like to know why and if any other pre sales servicing was skipped.
I didn't mention in my original post as it was already somewhat convoluted but my other issue is that 8 days after I bought the car the electrics went haywire, they have done this twice since, plus the keys came with mechanical keys which didn't fit the car so actually 8 days after buying it it locked me out completely (somewhat ridiculous at the time having to phone work to say I would be late as my own car had locked me out and maybe a harbinger of things to come!) Anyway when I started looking into the MOT issue I realised that the chip on the windscreen I noticed a few weeks after buying is mentioned on the April 2017 MOT on the gov website. All minor stuff, Mercedes have checked out the electrics, nothing found yet. Its just got me wondering, if they didn't MOT the car, what other inspections did they not do before I bought this car and if now being out of warranty I start to get some issues I would have preferred to pushed to have this investigated. Again I am not seeking monetary recompense just answers.
Thank you for the CEO of Marshall group details. When I purchased the car it was a different owner, I don't know if they have to honour the purchases in the same way?? Until this all started I had thought Mercedes was Mercedes, hence perhaps my lack of clarity on previous posts.
In regards to going to an ombudsman Mercedes Central closed my complaint and advised that if I was dissatisfied I should approach the motoring ombudsman that is who I have written to. I think there response time is 6-8 weeks.
Again thank you for all the comments, hopefully my response offers some clarification. Be kind please, I have had some very rude replies from Mercedes already suggesting I am money grabbing, I am not, I just want an explanation.