Well, after struggling to find any performance exhausts here in the UK for the 4th gen VTEC (apparently only Janspeed made one but they've gone now), I've found a place that makes custom stainless systems

called TopGear in Burnley.
But if anyone knows where I can get hold of import systems (Greddy, HKS, Powerflow, Neuspeed etc...) in the UK please let me know, but soon 'cos I'm gettin' it made on Monday...yippee!