Thanks for your input, I decided to give one of these kits a go, I went for 'Rapid Autocare ALLOY REPAIR' kit, it only cost about £14 so I thought it would be worth a go.
Here is the 'before picture' of the wheel
(remember 1 previous lady owner, never meet a curb she didn't run into)
As you can see there scratched around the wheel (and there in need of a little clean)
This was my weapon of choice for the cleaning, Turtle Wax foaming wheel clean, a quick scrub and wipe down and the wheels look nice and shiny, so on with the repair kit.
The first thing to do was to rub down the area with some of the supplied 600 wet and dry paper
I have only tried a small area to see how it looks first as I don't want to do the whole wheel if it looks rubbish. Once the area has been rubbed down it needs to be cleaned with an alcoholic wipe and then allowed to dry.
Once dry its on to the primer, the little bottle has a brush built into the cap so its really easy to apply, although it is a bit on the thick side for my liking.
It only needs one coat for surface scratches, but some of the little chips needed 2-3 coats.
Once its all dry then back to the wet and dry again to smooth it down. You need to be really careful here as in the areas with chips need more sanding than the scratched areas, and if your not careful you can accidentally sand off all the primer on the scratched area.
Once your finished with the sanding you need to rub it down with another alcoholic wipe again to clean off all the dust.
How comes the part I was really worried about, the paint colour! The kit I bought online was advertised as been for Alfa Romeos but the kit didn't say anything about it been for Alfas on it. The paint supplied was just called 'Alloy silver No2' so I gave it a go and it looked like a 85% match and I was a little dubious,
however I came back 10 minutes later after it had dried and I couldn’t tell the difference between the wheel and where I had painted.
the last step is a lacquer coat for shine and protection.
Once it had dried I took a step back and I couldn't tell the area had been repaired, the only way you would know is to look up close. From about 18 inches away you could tell its had a little work, but just. (who ever looks at there wheels that close anyway.)
Here is the finished area of the wheel
Over all I think it was defiantly worth it and I'll certainly be doing the rest of the wheel. The only problem is the kit only supplies a small amount of wet and dry paper, and 4 of the smallest alcohol wipes you have ever seen so I'll have to go out and buy some of them first.
(ps sorry if a couple of the pictures are a little blured, its hard painting a wheel with one hand and taking a picture it the other)