The cheapest way to live in the UK is to live in a remote town where living costs are low and commute to your job by Moped or motorbike.
Most two wheeled vehicles are about 3 times as fuel efficient as my small city car. My car burns about 1 litre of fuel every 15 kilometers on a good day with no traffic. Many two wheeled vehicles will travel close to 50 kilometers on one litre.
All two wheeled vehicles are dangerous and simply falling off your bike can cause life changing injuries or death.
The next cheapest way to live is the get a car with a similar engine to a motorbike, like a smart car. Smart cars are twice as fuel efficient as my small city car. Or to car pull. Take it in turns to drive a group of people into the Area. Each member of the group uses their own car.
I feel that it shouldn't be this way. Public transport should be the cheapest way to get around. But it is not. In fact it is more expensive then the car, even when the cost of insurance and road tax is considered. A typical season train ticket is around £500 per month. One liter of Petrol costs around £1.10 per litre in the UK.
I sense that profiteering and greed plays a role in the high costs of commuting in the UK.
