hi and thanks chris .
yes i have just been to the local ford agent here on anglesey ..they said much the same thing to me that it was the ABS self testing and there was nothing wrong ..i wasnt happy about this and phoned up ford direct from the agents and spoke to a engineer there ..he confirmed that it did happen on some cars and not on others and that there was plans to recall them ..i am still not happy about it and told him so and feel that there should be a recall on the cars that have this problem , because what ever they say it is not right to hear this noise.. plenty of mechanics have told me that .