I have just notice that I've started getting some condensation In both my near side front headlight and sidelight, there is no sign of any cracks or damage which I can see and all the bulbs are in tightly. any thoughts on what to check next?

 

The seal between the clear part and the rear.
The rear itself for any cracks, damage etc...on one of my rears there was a small indentation. Once filled, it stopped letting water in, yet I could NOT see the hole!

 

How much is some, your gonna get a little this time if year. I take it it clears after you put he lights on

 

It's a little mate, it clears in the headlight, but not the sidelight. I took the sidelight out and put it on the radiator for an hour and it cleared it all up, but as soon as it was back on the car it came back.

 

Can you put these lights in the oven for a couple of minutes to soften the seals in order to try and reseal it, if that makes sense.