Loss if coolant

Hi i had a new thermostate housing and thermostate fitted, around two months ago and i had no problems when i had it back now since the begining of this week i have noticed a coolant leak again in the same versinity as last time under the same side as the water pump, can anyone help here please i am at a lose. i am a disabled driver and love my freelander but i am worried as to what this could be. has anyone else experienced the same problem it is not the expansion bottle or cap the cap is also new and there are no cracks around the bottle.