Hey Guys,
Thanks i gathered it was a Callibrator as it established at about 14.5DME 27L and then came around and then did it again and then it established and then came back within a minute going West-East direction and then came back to establish and then did that same thing again, Near the SE London Area.
I bet INT North had some fun at that time of the boring Heathrow Morning :P (Night Qouta) Not a bird in sight