Checked on the DVLA website for some of old bikes, you can see if they are still taxed.
Yamaha RD350 YPVS B716 NEH (Mar 85-Jan 87)…still on the road!
Yamaha RD350F2 YPVS F284 OPP (May 89 – Nov 91) ….still on the road
Yamaha FZ750 Genesis C295 VRT (Nov 91 – Mar 00) …still on the road
Honda VF1000 C168 CAH (Mid 88-May 89)…still on the road
Be fun to have a reunion!
If you want to check some of your old bikes…
https://www.taxdisc.direct.gov.uk/EvlPortalApp/app/enquiry?execution=e2s1