>>>Yes a recent change to he law makes the registered keeper responsible for the payment of parking fines levied by local authorities (but not those issued by private parking companies)
I beg to differ, NJ!
Section 9(2)f Schedule 4 of the Protection of Freedoms Act 2012, giving a creditor the right to pursue an unpaid parking charge against the registered keeper of a vehicle (where that keeper does not know, or has not revealed, the identity of the driver) applies just as much to private parking operators as it does to local authorities:
http://www.legislation.gov.uk/ukpga/2012/9/schedule/4/enacted
>>>can someone explain the logic that the owner of the vehicle is responsible for the irresponsible actions of a driver of the vehicle
There was considerable concern (from motoring organisations and individual drivers, among many others) about the way that some clamping firms operated on private land. The Government therefore decided to outlaw such clamping activities. However owners of private land (such as shopping centres, supermarkets, churches, etc) expressed legitimate concerns that such a move would leave them powerless to deal with people who misused their car parks. (e.g. a supermarket could find that customers weren't able to park on its car park because football supporters had taken all of the places, thus costing the supermarket thousands of pounds in lost takings).
As the law stood at that time, the registered keeper of a vehicle could (upon receiving a charge notice in respect of unauthorised parking) simply say "I wasn't the person who parked the car on your car park [whether that was actually true or not] and I'm not telling you who did park there, so you won't get your money".
The Government agreed that the owners of car parks (and other private land) shouldn't be left powerless to control unauthorised parking, so they were given the right to pursue the registered keeper of a vehicle for unpaid parking charges (where the identity of the driver wasn't revealed to them)
in exchange for the loss of the right to wheel-clamp vehicles.
>>>Is the owner also responsble for speeding fines?
The registered keeper of a vehicle is required to reveal the identity of the driver of that vehicle upon receipt of a 'Notice of Intended Prosecution' for speeding. If he/she fails to do so, the law assumes that he/she was driving the vehicle and he/she will be given the relevant fine & penalty points.
>>>Is the owner responsible if the vehicle is involved in a crime?
Some offences include the words 'cause or permit' within the relevant legislation. So if, for example, you fail to check that your friend has adequate insurance cover before permitting him to drive your car [and he hasn't] you will face the same penalty as him (which is usually a £200 fine and 6 penalty points).
Where 'cause or permit' isn't within the relevant legislation, the CPS would normally have to prove that you knew that your vehicle was to be used in a crime to be able to prosecute you for it. (e.g. if you allow someone to use your car to kidnap a victim, you're just as guilty as the kidnapper).