update on what happend! it was the thermostat housing that was leaking afterall (thanks to those who pointed that out) i noticed a tiny jet of water spraying out under revs. anyway took it to a garage near me gave them the parts list they said the parts would be £90 + 2 hours labour £197 in total (fair enough i thought). so i pick it up and all seemed well, when i got to work i had a look and saw that the coolant was below minimum but the cap was loose so i thought id lost some on the drive to work, then i noticed a small drip from the blue box and the blanking plug connected the housing, s