Many thanks to all who have contributed to this discussion, I now have cruise control which works.
If your after a CC stalk there is a seller on eBay with a couple left (link below), you get the correct cowling and necessary screws too. filipharvey makes a good point above which you may wish to try, you might just pick one cheap as chips. Just make sure you get the correct cowling otherwise you might say bad words when you try to replace the old one.
Here's how I did it for those who want to know: -
(Have a look Fireyfellas post on page 6 too)
1. After a drive try and leave the steering wheel a quarter turn left so that the large open space normally at the top is now available for screwdriver access, it makes this job much easier.
2. Next you'll need an allen key to remove the three bolts holding the lower steering cowling in place. On the inside of the cover there are clips holding it in place so you may need to use some light persuasion.
3. Once removed you can see the steering column with the ignition coil and a series of leads. There should also be a free connector tied back amongst the other wires.
4. The stalk I bought also included the necessary screws, a one inch and a half inch screw. There is a self-taper already there, remove it and put the CC stalk into position taking care not to damage any of the surrounding components. It is the one inch screw you will need to attach the CC stalk to it's seat. (The image shows how difficult this would be with the wheel left in the normal 'upright' position.
5. Tighten the screw and check for any play in the stalk. Adjust if necessary. Once the stalk is in place you can clip the connectors together.
6. When you are happy you can fit the new cowling, which is an absolute turd if I'm honest. It can take w while to get the cover to line up properly with the upper cowling.
7. Start the engine and see if the ECU has picked up the new stalk, you should see a green symbol light up in the centre of the speedo.
8. If you do not see the green light take the car out for a short drive. Find yourself a nice straight stretch of road and activate the cruise control at the desired speed. Let off the gas pedal and there should be a split second delay before the CC kicks in. Feels a little weird the first time, it sounds daft I know but this was the first time I'd ever experienced it. Simple things...
Cheers people. Please tell me if I've missed anything, I am here to learn.