There are a lot of clues that point to this interior at the very least having been re-done. That said Lamborghini in 2003 did not have a lot of options when it came to their cars. They had not yet clued in on the massive money they could make by personalizing cars and beyond interior and exterior colour options there was not much that could be done from the factory. The custom stitching on the seats is almost certainly not factory and if anyone is passing it off as such they would need very good documentation proving it.
Absolutely not as a UK car, possibly for other markets but I would not think so. The seat stitching is not correct and the Lamborghini logo on the centre console is also not correct, the red trim panels are also not correct.
If you see the car in the flesh, look for marking on the seat runner bolts or on the screw heads on the trim panels as tell tail signs its been out of the car.
As the guy above said if it is factory its a very special order and you would want paper work.
But its also worth noting its a manual merci which will only become more desirable and worth it if you can by at the right money