A couple of posters have replied to the OP's concerns about being no longer able to drive with the suggestion to get a taxi. Unfortunately it isn't always that easy in the countryside. On two occasions, one in Somerset one in Cornwall, we were unable to get taxis to transport us. There just isn't the volume of customers for them to be readily available in every village or small town.
If moving to the countryside a passing bus service is a must if you can no longer drive.
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