There are at least a couple of labs in London (literally the other side of the world) doing this for artists, as well as several in mainland Europe, which suggests it is becoming less uncommon. Scott Martin had a video of a grand format flatbed he'd worked on, on his site, and he seems to colour-manage internationally - he might have some pointers for a provider in your neck of the woods...
Who are the good ones in London? UV-curable laminate is a must - most of my work looks better in high-gloss.