My guess would be ebay?

VW Volkswagen T5 Transporter Wood Dash Trim Kit RHD | eBay

They also have a brushed alloy looking kit too

VW Volkswagen T5 Caravelle Wood Dash Trim Kit RHD 25pts | eBay

I would be interested to hear how the kit is going in Kev's T5, have you noticed any fading or lifting at all? Looks nice anyway.