Information from www.MACcodes.co.uk (with kind permission).

Migration Authorisation Codes, MAC codes, allow broadband customers to switch between providers with minimal, if any, disruption to their broadband connection. The MAC code is an alphanumeric series of characters unique to a particular line.

The MAC code consists of four letters, always beginning with L, followed by between seven and nine numbers, a slash, and five alphanumeric characters (e.g. LAEM1234567/1F6HT).

For detailed instructions on how to change provider, please select your current and new (prospective) broadband provider from the drop-down boxes below. Once you click submit, we'll give you the phone numbers and links you need to successfully obtain your MAC code.

Current Provider: Please select...3 Mobile BroadbandAAISPAbel InternetADSL 4 LESSADSL-NowADSL24Advance InternetAlbionAllcommAOL (UK)Atlas InternetBe Broadbandbeeb.net (BBC)Breathe InternetBroadband QuestBroadSurf Internet ServicesBT BroadbandBT Business BroadbandBTA LimitedBulldog CommunicationsBytel LimitedC2 Internet LimitedClara.netCOLT TelecommunicationsCommunity Internet PlcCustom AccessDataComms Europe LimitedDatanetDemon (Business)Demon (Residential)Direct Save TelecomEasynet Limited (business)Eclipse Internet (business)Eclipse Internet (residential)EFH BroadbandEliteUKServeEntanet International LimitedFalconNetFast 4 InternetFast.co.ukFasthostsFastsurffire NETFirefly InternetForce 9Freedom to Surf PlcFreeolaGet Online BroadbandGlobal InternetHot Chilli Internet SolutionsHouxouICM NetServ Solutions plcIDNetInterdart LimitedInternal Systems LimitedInternet Central LimitedInternet for Business LimitedInterViVo Networks LtdIntoNetInweb NetworksizR Solutions LimitedJersey TelecomKaroo.co.ukKeConnect InternetKingston CommunicationsLixxusLondon WebLumisonMadasafishMailbox InternetMerula LimitedMetroNet Internet ServicesMistral InternetMoving-Edge.netNamescoNDONet Services PlcNewNetNildramNitrex LimitedO2 BroadbandOnyx InternetOpalOrange BroadbandOrange Mobile BroadbandPipex Internet (Business) - NOW TiscaliPipex Internet - NOW TiscaliPlusNet PlcPost Office BroadbandPower Internet LimitedProdigy NetworksQuik InternetRealEmailRM Internet for LearningSAQ.co.ukScotland OnlineScotnetSelcom BroadbandSky BroadbandSkymarket LimitedStarSupanetSurf AnytimeT MobileTalk InternetTalk TalkTalk TalkTelecompleteTescoThree (3) Mobile BroadbandthusTimewarp InternetTiscaliTop LetterTotal Web Solutions LimitedToucan BroadbandTwang.netUK OnlineUKFast.netVirgin MediaVISPAVivacitiVodafoneWaitrose.comXifosZen InternetZetnet Services Limited

New Provider: Please select...3 Mobile BroadbandAAISPAbel InternetADSL 4 LESSADSL-NowADSL24Advance InternetAlbionAllcommAOL (UK)Atlas InternetBe Broadbandbeeb.net (BBC)Breathe InternetBroadband QuestBroadSurf Internet ServicesBT BroadbandBT Business BroadbandBTA LimitedBulldog CommunicationsBytel LimitedC2 Internet LimitedClara.netCOLT TelecommunicationsCommunity Internet PlcCustom AccessDataComms Europe LimitedDatanetDemon (Business)Demon (Residential)Direct Save TelecomEasynet Limited (business)Eclipse Internet (business)Eclipse Internet (residential)EFH BroadbandEliteUKServeEntanet International LimitedFalconNetFast 4 InternetFast.co.ukFasthostsFastsurffire NETFirefly InternetForce 9Freedom to Surf PlcFreeolaGet Online BroadbandGlobal InternetHot Chilli Internet SolutionsHouxouICM NetServ Solutions plcIDNetInterdart LimitedInternal Systems LimitedInternet Central LimitedInternet for Business LimitedInterViVo Networks LtdIntoNetInweb NetworksizR Solutions LimitedJersey TelecomKaroo.co.ukKeConnect InternetKingston CommunicationsLixxusLondon WebLumisonMadasafishMailbox InternetMerula LimitedMetroNet Internet ServicesMistral InternetMoving-Edge.netNamescoNDONet Services PlcNewNetNildramNitrex LimitedO2 BroadbandOnyx InternetOpalOrange BroadbandOrange Mobile BroadbandPipex Internet (Business) - NOW TiscaliPipex Internet - NOW TiscaliPlusNet PlcPost Office BroadbandPower Internet LimitedProdigy NetworksQuik InternetRealEmailRM Internet for LearningSAQ.co.ukScotland OnlineScotnetSelcom BroadbandSky BroadbandSkymarket LimitedStarSupanetSurf AnytimeT MobileTalk InternetTalk TalkTalk TalkTelecompleteTescoThree (3) Mobile BroadbandthusTimewarp InternetTiscaliTop LetterTotal Web Solutions LimitedToucan BroadbandTwang.netUK OnlineUKFast.netVirgin MediaVISPAVivacitiVodafoneWaitrose.comXifosZen InternetZetnet Services Limited