Its over 10 yrs old so your local motorfactor should be able to get it,another company are foreign autoparts,dunno if you have one local to you!
Also GSF do Honda parts,as got an oil filt and other bits to service my neighburs 1999 civic 1.5i LS VTEC.
Got a set of 4 brake hoses and other bits for the 1967 Karmann Ghia I refurbed at a VERY good price from them!
They have a branch at,
Unit 16,
Bessemer Road,
Cardiff
CF11 8BA