Heres a photo of the PCV valve and its grommet and the screen thats underneath.

As you can tell from this picture of the grommet, someone has tried to glue it in. You can see the glue on the top section.

I'll get one of them ordered tomorrow. PCV valve is clear now and screen has been degreased and blown through with 150 psi air line.
I have sprayed the heavily oiled area (even down to the transmission and beyond) with degreaser and I will leave it overnight to soak in. Careful application of water and air, and it should be a lot cleaner. Then its valve covers off and on with new gaskets. Trouble is my Wife says I absolutely stink now due to the degreaser, so I got thrown out of the house to get changed!!
Have a close look at the passenger side rear light. It should be secured down with 4 screws. There is actually only 1 left!!

Easy fix though!
Heres a couple of photos of the front leather seats. The drivers has a split in it where the leather has dried out, and the passenger is just about to go as well. Got a leather expert out yesterday who confirmed the leather was irrepairable and neede replacing. Matching the colour won't be a problem. Cost? Well, I asked if i could help do it to cut down the cost and he agreed. Should be somewhere near £300 to replace the bases of the front seats and dye and condition the rest.

Andy.