Sorry, loss of Electrical power the Battery has run down to flat. This is what happened when I had the original battery on. I have done two runs with the new battery about 40+ miles in total. It seemed fine yesterday but this morning it was flat , not enough to turn the engine over several random warnings 'engine oil needs checking/ low tyre pressure warning. Now all gone.

thanks for the response, I have my local garage involved to the point where he has done a Battery and Alternator test. This was done to confirm they were working ok, the readout on the test was good. The issue I have is, something is draining the battery, Having looked On- Line I have seen videos that point to some kind of power drain, the problem is finding the culprit. The one thing on the car that is an ongoing problem is the 'Passive entry' on the driver's door has stopped functioning properly. I have to use the key which will open the doors at a distance when pressing the button on the Fob.