I've been looking at some CW flights next spring. By adding a single day's car rental (in this case at £28) I can not only just pay a deposit now, but will also earn bonus BA Holidays Avios.

I don't really need the car as I have a significantly better deal from another company, but I'm sure I saw (but can't find again) a mention of a 'no show' fee.

Is there any issue with simply not collecting the car?