| M | Nat AARONSON | Youth | | 1 |
| M | Daniel ABBOTT | - | | 1 |
| M | Richard ABBOTT | Hardtail / Veteran | Astonhill.com / DEES CYCLES / PRONGHORN RACING | 53 |
| M | Rich ABRAHAM | - | | 3 |
| M | Richard ABRAHAM | - | | 4 |
| M | David ACEDO RODRIGUEZ | - | | 1 |
| M | Joe ACHILLES | - | | 14 |
| M | Paul ACKERMAN | Master | | 6 |
| M | Adam ACOTT | - | | 8 |
| M | Richard ACOTT | Hardtail / Junior | | 37 |
| M | Jorge ACUNA QUINTANA | - | | 2 |
| M | Mauricio ACUÑA QUINTANA | - | | 3 |
| M | Arran ADAM | Youth | | 4 |
| M | Ben ADAMS | Juvenile | | 1 |
| M | Felix ADAMS | Youth | | 5 |
| M | Ivan ADAMS | Senior | | 4 |
| M | Jeff ADAMS | Veteran | | 23 |
| M | Lucas ADAMS | - | | 1 |
| F | Monet ADAMS | Elite / Junior / Open | All Terrain Cycles / Fenwicks / Nikita / Quad Technology / Shinny Racing / SRE / Transition Bikes | 60 |
| M | Niall ADAMS | - | | 5 |
| M | Nigel ADAMS | - | | 6 |
| M | Peter ADAMS | - | | 1 |
| M | Simon ADAMS | - | | 3 |
| M | Steve ADAMS | - | | 3 |
| M | Stuart ADAMS | - | | 1 |
| M | Thomas ADAMS | - | | 1 |
| M | Callum ADAMSON | - | | 1 |
| M | Glenn ADAMSON | Master | | 10 |
| M | James ADAMSON | Master | | 4 |
| M | Karl ADAMSON | - | | 1 |
| M | Matt ADDISON | Senior | Swansea University | 1 |
| M | Michael ADDYMAN | Senior | | 1 |
| M | Dan ADKIN | Junior | | 1 |
| M | Björn AESCHLIMANN | - | | 2 |
| F | Anita AGER-WICK | Elite | Norway | 3 |
| M | Al AGIOMI | Senior | | 1 |
| M | Antony AGOPIAN | Senior | | 1 |
| F | Aurea AGOSTINHO | - | | 3 |
| M | Jorge AGUIN CASTRO | Elite | | 8 |
| M | Adam AHMED | Senior | Banshee / Fakawi / Uni Of Bristol Bike Club | 5 |
| M | Akib AHMED | Junior | Cyclelane | 15 |
| F | Farah AHMED | Senior / Women | | 2 |
| M | Samuele AICARDI | Elite | GGC09 | 8 |
| M | Kevin AIELLO | Elite / Junior | GTB09 / GTB10 / United States | 10 |
| M | Craig AITCHISON | - | | 6 |
| M | Grant AITCHISON | Junior | | 13 |
| F | Lynne AITCHISON | - | | 4 |
| M | Callum AITKEN | Junior / Youth | Flying Fox Bikes | 10 |
| M | Daniel AITKEN | - | | 3 |
| M | Callum AITKENHEAD | Junior / Youth | | 3 |
| M | Collin AKERS | Master | | 2 |
| M | Denny AKERS | Master | | 3 |
| M | Jack AKERS | Juvenile | | 1 |
| M | Chris AKRIGG | Master | Aire Valley Cycles / Mongoose | 3 |
| M | Will ALDERTON | Hardtail / Junior | | 2 |
| M | Liam ALDRIDGE | - | | 2 |
| M | Marcus ALDRIDGE | Youth | | 1 |
| M | Gadois ALEXANDRE | - | | 1 |
| M | Darren ALFORD | Senior | | 28 |
| M | Zaid ALI | - | | 1 |
| M | Hudson ALISTAR | Senior | | 1 |
| M | Christopher ALLAN | Senior | | 3 |
| M | Joshua ALLAN | Senior | Leeds University | 1 |
| M | Phil ALLAN | Senior | | 1 |
| M | James ALLAN-MCLEAN | Senior | W Homer Cycles | 8 |
| M | Alexander ALLEN | - | | 4 |
| M | Alistair ALLEN | - | | 7 |
| M | Ben ALLEN | - | | 1 |
| M | Jayme ALLEN | - | | 1 |
| M | Joseph ALLEN (gbr) | Senior | Evans Cycles | 1 |
| M | Joseph ALLEN (nzl) | Elite | | 2 |
| M | Josh ALLEN | Senior | Leeds University | 3 |
| M | Martyn ALLEN | Veteran | | 4 |
| M | Scott ALLEN | Junior / Youth | | 6 |
| M | Stephen ALLEN | - | | 9 |
| M | Jason ALLGOOD | Veteran | | 2 |
| M | Matthew ALLINSON | Senior | | 1 |
| M | Richard ALLINSON | Master | | 1 |
| M | Andy ALLISON | Senior | | 1 |
| M | Owen ALLISON | Master / Senior | | 11 |
| M | Rob ALLISON | Senior | Northumberland Uni | 1 |
| M | Tyler ALLISON | Junior | Canada | 3 |
| M | Mark ALLSOP | - | | 1 |
| M | James ALLWAY | Master | | 2 |
| M | Sohail ALONSO | Junior | | 1 |
| M | Shaun ALPINE-CRABTREE | - | | 1 |
| M | Daniel ALVAREZ SALGUEIRO | Elite | | 2 |
| M | Daniel ALVAREZ VILLA | Elite | Colombia | 1 |
| M | Mark AMER | - | | 4 |
| M | Chris AMES | Master | Machen miggly moos | 40 |
| M | Mathew AMIER-WEST | - | | 1 |
| M | Didar AMIN | - | | 2 |
| M | George AMOS | Senior | | 1 |
| M | Karim AMOUR | - | | 4 |
| M | Simon ANDERS | - | | 2 |
| M | Ben ANDERSON | - | | 2 |
| M | Brian ANDERSON | Senior | | 3 |
| M | Christopher ANDERSON | Master | | 1 |
| M | Douglas ANDERSON | Senior | db Racing | 2 |
| M | Ewan ANDERSON (jun) | Junior | | 8 |
| M | Ewan ANDERSON (mas) | Master | | 9 |
| M | Garry ANDERSON | Junior | Bikelife Racing | 8 |
| M | Isaac ANDERSON | Youth | Dakine / Torico / UK Bike Park | 44 |
| M | James ANDERSON | Junior / Youth | Paperback Recycling / Scotby Cycles / Stuart Barkley Cycles / stuartbarkelysracing | 24 |
| M | Joel ANDERSON | Juvenile | Dakine / Torico / UK Bike Park | 42 |
| M | John ANDERSON (yth) | Junior / Youth | | 11 |
| M | John ANDERSON (sen) | Senior | | 7 |
| F | Kelsey ANDERSON | Junior | United States | 1 |
| M | Ross ANDERSON | Expert / Senior Champs | Leisure Lakes / MSC Bikes / Yeti | 43 |
| M | Sam ANDERSON | - | | 1 |
| M | Stephen ANDERSON | - | | 2 |
| M | Tom ANDERSON | Juvenile | | 7 |
| M | Rikard ANDERSSON | Elite | | 1 |
| M | Guilhem ANDRE | - | | 2 |
| M | John ANDREE | Veteran | | 4 |
| M | Mark ANDREE | - | | 2 |
| M | Daniel ANDRES | Senior | | 3 |
| M | Bastien ANDREU | Junior | TSB09 | 3 |
| M | David ANDREW | Veteran | Team Just | 3 |
| M | Fraser ANDREW | Senior | FA Customs / Heriot Watt / Heriot-Watt | 4 |
| M | Peter ANDREW | - | | 1 |
| M | Tim ANDREW | - | | 1 |
| M | Will ANDREW | - | | 2 |
| M | Charles ANDREWS | - | | 1 |
| M | Chris ANDREWS | - | | 1 |
| M | Konstantinos ANDRIOTIS | Elite | | 1 |
| M | Giacomo ANGELI | - | | 1 |
| M | Connor ANGUS | Junior / Juvenile / Youth | | 10 |
| M | Paul ANGUS | - | | 1 |
| M | Brett ANSLEY | Master | | 2 |
| M | Rob ANSLEY | Junior | | 1 |
| M | Ben ANSTEY | - | | 1 |
| M | Paul ANSTIE | - | | 1 |
| M | Nino ANTIC | - | | 1 |
| M | Luke ANTOS | - | | 2 |
| M | Mark ANTROBUS | Senior | | 31 |
| M | Takuya AOKI | Elite | Japan | 2 |
| M | Simon APLIN | Expert / Pro-Am / Senior | Astrix / Axo / Bergamont | 64 |
| M | Stacie APPLEBY | Senior | MIJ DH | 5 |
| M | Wayne APPLEBY | Senior / Senior Non-champs | 2Stage Bikes / Fenwicks / WideopenMag.co.uk | 45 |
| M | Sam APPLEYARD | - | | 3 |
| F | Verity APPLEYARD | - | | 3 |
| M | Cristian ARAYA | - | | 1 |
| M | Chris ARCHER | Master | | 13 |
| M | Darren ARCHER | - | | 20 |
| M | Michael ARCHER | Master | | 2 |
| M | Peter ARCHER | - | | 1 |
| M | Simon ARCHER | Senior | NUBike.com | 3 |
| M | Mattia ARDUINO | Elite | ABG09 / ABG10 | 5 |
| M | Warren ARGYLE | Master | | 6 |
| M | Cameron ARGYLE-ROBINSON | Senior | | 11 |
| M | Arran ARGYLL | Master | | 1 |
| F | Carole ARMANET | Elite | | 2 |
| M | Oscar ARMISTEAD | Youth | | 2 |
| M | Jamie ARMITAGE | Master | High Peak Cycles / Kenda / Sixpack-Racing.com | 23 |
| M | Philip ARMITT | Master | The Bike Pedlar | 2 |
| M | David ARMSTRONG | Master | Keswick Bikes | 2 |
| M | Harry ARMSTRONG | Elite | | 2 |
| M | Lewis ARNOLD | - | | 1 |
| M | Neil ARNOLD | - | | 2 |
| M | Benjamin ARNOTT | Senior | Heriot-Watt | 3 |
| M | Neil ARORA | - | | 1 |
| M | Matthew ARROWSMITH | - | | 1 |
| M | James ARTHUR | Senior | Uni Of Bristol Bike Club | 3 |
| M | Florian ARTHUS | Elite / Junior | | 6 |
| M | Alexandre ARTZT | Senior | Ryde Racing | 4 |
| M | Yoshiaki ASANO | - | | 1 |
| M | Josh ASH | Youth | | 4 |
| M | Don ASHBRIDGE | - | | 2 |
| M | Paul ASHBRIDGE | - | | 1 |
| M | Philip ASHBRIDGE | Elite | Mountain High Cycles | 57 |
| M | Rob ASHBURNER | - | | 1 |
| M | Simon ASHBY | Master | | 1 |
| M | Gavin ASHFIELD | Senior | | 1 |
| M | Matthew ASHMORE | Juvenile / Youth | | 22 |
| M | Lance ASHTON | Juvenile | Woodland Riders | 1 |
| M | Adam ASHWORTH | Junior | | 2 |
| M | Chris ASHWORTH | Senior | | 8 |
| M | Hugh ASHWORTH | Master | | 3 |
| M | Nick ASHWORTH | - | | 3 |
| M | Jamie ASKEW | Senior | | 8 |
| M | William ASKEW | Senior | Newcastle University | 2 |
| M | Deano ASTBURY | - | | 1 |
| M | Chris ASTLE | Senior / Senior Non-champs | Aberystwyth / Southerndownhill.com / thebigadventurestore.co.uk | 42 |
| M | Colin ASTLEY | Senior | | 1 |
| M | Mark ASTLEY | Veteran | | 5 |
| M | Martin ASTLEY | - | | 4 |
| M | Dylan ASTON | - | | 20 |
| M | Paul ASTON | - | | 18 |
| M | Chris ATHERTON | Senior | | 1 |
| M | Dan ATHERTON | Elite | ANC09 / Animal / COM10 / Commencal | 35 |
| M | Gee ATHERTON | Elite / Senior Champs | ANC09 / Animal / COM10 / Commencal / Great Britain / Team Commencal | 44 |
| F | Rachel ATHERTON | Elite | COM10 / Commencal / Great Britain | 32 |
| F | Reanne ATHERTON | Elite / Senior | Dave Mellor Cycles | 13 |
| F | Sarah ATKIN | Junior | New Zealand | 1 |
| M | Daniel ATKINS | - | | 1 |
| M | Steve ATKINS | Master / Senior | Torico | 24 |
| M | Bryn ATKINSON | Elite | Australia | 26 |
| M | Chris ATKINSON | Master | | 4 |
| F | Emma ATKINSON | Junior | 777 Racing | 15 |
| M | Jack ATKINSON | Hardtail | | 1 |
| M | Jay ATKINSON | Youth | Just Jay Racing / Planet-Knox.com | 13 |
| M | Lee ATKINSON | Senior | | 1 |
| M | Matthew ATKINSON | Junior | | 3 |
| M | Neil ATKINSON | - | | 1 |
| M | Paul ATKINSON | Junior | | 1 |
| M | Rhys ATKINSON | Elite | | 6 |
| M | Owen ATKINSON-JONES | Senior | | 1 |
| M | Hiroshi ATO | Elite | | 1 |
| M | James ATTECK | Senior | Imperial | 2 |
| M | Tom ATTLEE | Expert / Senior / Senior Champs | Pearce Cycles | 22 |
| M | Lee ATWELL | Master | 337 Racing | 3 |
| M | Philip ATWILL | Juvenile / Youth | IXS08 / Swiss & Swallow / Tomac | 33 |
| M | Matt AUBURN | Senior | Nottingham Trent | 1 |
| M | Sam AUCHTERLONIE | - | | 3 |
| M | Tom AUSTERBERRY | Youth | | 3 |
| M | Daniel AUSTIN | Senior | | 1 |
| M | Graham AUSTIN | - | | 2 |
| M | Phillip AUSTIN | Senior | Kustom Bikes | 6 |
| M | Giles AUSTING | Master | Mulebar.com | 5 |
| M | James AVEIL | Youth | | 2 |
| M | Kem AVIS | Veteran | | 32 |
| M | David AXELSSON | Elite | | 1 |
| M | Andy AYERS | Senior | Ancillotti UK / Total Bike Tuning | 17 |
| M | Nick AYERS | - | | 1 |
| M | Mike AYLES | Senior | Swansea University | 1 |
| M | Benjamin AYLING | Elite | | 7 |
| M | Graham AYLING | Master | | 3 |
| F | Sarah AYLING | - | | 1 |
| M | Billy AYLMORE | Senior | | 1 |
| M | Jason AYRES | Master | | 2 |
| M | Graham AYRIS | Senior | | 2 |
| M | Gareth AYTO | Master | | 1 |
| M | Mark AZZAPARDI | - | | 16 |
