For items like throttle levers I allways use chrome in a rattle can. If prepped properly it looks almost identical to the real thing.

Anyone used the DIY chroming kits ?

You can buy kits, though....
Chrome plating kit

I researched chroming a while back when restoring a classic scooter and it appeared that a number of local firms who used to offer a seasonably priced service were "forced out of the market" by health and safety issues but continued to offer the service by acting as agents for one or two bigger concerns.
Some came clean about it while others pretended that they still did chroming "in house" but the net result was two lots of profit being taken out of the one job plus transport costs etc. Plus the fact that one had no idea where one's, possibly irreplaceable, item was.
A re-chromed headlight rim cost me around £50 at the London Chroming Company and a re-silvered reflector for the same headlight £35 from a more local company, Central Engineering of Hythe. In both cases the results were excellent.  
In both cases new reproduction parts were available at far less cost but experience showed that they "didn't fit where they touched"!

I don't know how that works....

That is exactly why the VHGMC are members of FBHVC. We need someone to fight our case.

That'll be like a 'hard chrome' process Gareth, yes?
Like front forks on motorbike.. specialised stuff!

Can't decide which route to go down . Cost is obviously an issue , while quality cannot be measured in monetary terms. Is a super chrome finish overkill on this project ? Having said that I can see myself in the reflection of the paintwork , so ...... Help !!

gareth I also have tried it just to see what the result was like,and strangly enough we had a chromed toilet seat and lid which was slightly worn away and I gave the whole unit a couple of coats and it has certainly given new life and sheen to it .having said this I must warn people that you have to hang onto the bath taps as its very slippy now.