General Brokers
Domain Arcade, Domain Bids, Elite Domain, Headpoint.com, My Domain Name, Name-Shop, Namegiant.com, Names4Sale, SEDO, Sellersite
Registration
123 Domain Names UK, 123-Reg, 123DomainName.co.uk, 888REG, ABCreg, Acelogic.com, Actinolix, All the Whois, All UK Domains, BB-Online
Domain Watcher
Tracks deleted, expired, on hold and detagged domains and notifies subscribers when their chosen domain becomes available to register.
Don't Publish My Home Address On The Web
Campaigning to prevent Nominet from publishing domain owner's addresses.