Thank you all for your advice, comments and suggestions, rather than reply individually I will explain further here.
I will be 56 years old on Saturday, I passed my driving test when I was 17 years old, didn't have a car of my own until I was 25 years old, and spent 30 years as a police officer, so confidence and experience in driving is not an issue, as I have driven many vehicles in many situations. I have also seen the results of incidents involving drivers who should have given up, and was determined not to be one of those statistics. From 2007 I drove an automatic because of dropped foot and weakness in my left leg, As that weakness spread to my left leg I drove shorter and shorter distances, I gave up my own car in January 2009 and my husband changed his car for an automatic so I could continue.
However, I am sure that now I could not get my right leg from accelerator to brake quickly enough. As for a vehicle with hand controls, there hardly seems any point, as I can't go anywhere on my own, I need help in and out of the car and in and out of where ever I might be going, can't lift the mini scooter out of the boot, not strong enough or sufficient balance to get my wheelchair out of the boot, or propel it myself, need somone to hold the crutches for me as I get out of the car, wouldn't be able to fill up with petrol, etc.
It's not the driving so much as the finality of it all. I hadn't expected when I was diagnosed with "mild ms" which was later described by another neurologist as "slow" just six years later to be unable to live independently.
I might get a bigger scooter, as well as the mini one my husband dutifully lifts in and out of the boot for shopping and pottering about locally, so that I can get further afield independently, but they and their drivers have had a lot of adverse publicity lately, and I am resisting because I am not old!!