Association of Motoring Clubs
The Council of Motor Clubs
https://www.councilofmotorclubs.org.au/
Victorian Club Permit Scheme
https://www.vicroads.vic.gov.au/registration/limited-use-permits/club-permit-scheme
NSW Historical Vehicle Conditional Registration
https://www.rms.nsw.gov.au/roads/registration/get-nsw-registration/historic-vehicles/index.html
South Australian Historic Registration
Bristol specific
The Bristol Owners Heritage Trust - a great site focused on Bristol's automotive (and some of its aeronautical) history.
Bristol Owners Club - the UK Bristol club, a remote outpost of BOCA (only kidding!)
Bristol Cars - if you're looking for a new or pre-owned Bristol
"Every Youtube video worth watching with a Bristol in it" - grammatically shaky title, but BOCA's own curated selection of videos featuring Bristol cars as found on everybody's favourite video site.
Why the Bristol Fighter is a supercar with a difference - a slideshow from Classic and Sports Car magazine on the last of the Chrysler-engined Bristols.
Bristol 450: Bristol's finned flyer - another Classic and Sports Car magazine slideshow on Bristol's successful mid-'50s endurance racer.
Bristol beauty: diving into a British classic with German ancestors - a nice profile on the Driven website of a restored 401 in Auckland, NZ, owned by Tony Bushell.
Everything else
Ron Thorp's 1964 Shelby Cobra - an extensive history of BOCA member Ron Thorp's Cobra, the first in Australia, successfully campaigned throughout the '60s.
The Revs Institute - a site built around the Collier collection of significant sports cars, features an archive of motor racing images searchable by marque, year, personality or photographer.
Classic Car Catalogue - every model by every manufacturer for every year from 1930-1979. Who was mad enough to put this together?
The Coachbuilders Encyclopedia - a comprehensive collection of coach builders and their designs - somewhat lacking in coachbuilt Bristols, though.
Postwar Classic Magazine - Classic car articles by enthusiasts accompanying a European classic car marketplace.
Classicdriver magazine - Classic cars, bikes and watches for the well heeled.
Petrolicious.com - high quality videos and photography; car porn, basically.