Hi Ian & welcome!......unfortunately there is very little in the way of Aftermarket gear available for the Accent in the U.K. & no body-kit at all!.
There is a kit or 2 available.......but you`d have to bring it in from Australia & shipping costs are horrendous!.
Regarding tuning, you are pretty-much limited to cold-air induction kit, performance cat.-back exhaust & FSE boost valve (adjustable fuel-pressure regulator). I am sure lowering-springs are available.
All the above can be obtained from Demon Tweeks, who advertise in Max Power etc.
Cheers & good luck,
Nick.
