Yamaha SU200
Andy has confirmed that Owain's SU200 was used on the Kicking Cars EP, we're not entirely sure where as it's assumed the Akai S2000 was still the main workhorse sampler.
My thought is that Owain most likely brought samples from home that he'd made as the SU200 has a CF card slot, so samples like CUT's flute, Sodium Chloride (Demo)'s Blade Runner sample, etc, etc, were most likely done on the SU200.