And whilst going to the Herculean effort of checking the front lights, take a packed lunch and yomp the miles to the back end and have a look at those too, or indeed reverse up to something fairly reflective and just run through your rear light sequences.

As an aside i think this is why rear lights on many new cars now feature at least two bulbs a side, more chance of having both sides lit when the car reaches it's third birthday and the first time it gets the lights inspected.....by the MOT tester.

Just as bad for me is the rear fog lights left on when its clear.

"But please people go to Halfruds buy a £5 bulb and the nice man will even fit it for you..there is no excuse!"

Sadly a lot of modern cars require either three hands or multijointed slim fingers to fit a bulb or even worse the front bumper needs to come off. Not something you want Halfords attempting. Better try the main dealer who will have done it so many times they will know the tricks to fitting the bulb.