Ethel, you keep on suggesting that offences such as these invalidate insurance cover. I keep on saying that they do not. The only offence which generally invalidates any insurance cover that may be in force is driving whilst disqualified (which is not the same as driving without a licence). Some insurers recently have started to deny cover where provisional licence holders have driven on a motorway but this is a recent phenomenon and is still to be fully tested.
I know from past posts that you are doubtful that what I say is true. I can only suggest that you take a trip to your local magistrates� court and observe a traffic court. There you will find many, many cases where the prosecution lays charges of driving otherwise than in accordance with a provisional licence (no �L� Plates or accompanying qualified driver), no MoT, faulty lights, no driving licence and so on. Some of these are accompanied by a �No Insurance� charge (where the miscreant has simply not bought a policy). However, many of them are not. This is because the defendant has produced evidence of insurance and the prosecuting authorities see nothing in the policy which makes it invalid by virtue of the other offences committed.
Careless driving is a far more serious offence than driving without �L� Plates, but no insurance company that I know of has denied liability to a policy holder who has rear-ended another vehicle and subsequently been charged with careless driving. To repudiate liability the insurer�s policy must state specific exceptions and few, if any, that I know of exclude cover in the circumstances that vespaboy describes.