The A421 Trunk Road (Great Barford Bypass) Detrunking Order 2003
2003年A421主干道（大巴福德绕道）拆除令

The A421 Trunk Road (Great Barford Bypass, Bedfordshire) (Temporary Prohibition of Traffic) Order 2013
2013年A421主干道（贝德福德郡大巴福德旁路）（临时禁止交通）法令

The A421 Trunk Road (Wootton to Great Barford, Bedfordshire) (Temporary Restriction and Prohibition of Traffic) Order 2011
2011年A421主干道（伍顿至贝德福德郡大巴福德）（临时限制及禁止交通）令

The A421 Trunk Road (Bedford Southern Bypass, Elstow, Bedfordshire) Slip Roads (Temporary Prohibition of Traffic) Order 2013
2013年A421干道（贝德福德郡埃尔斯托贝德福德南绕道）支路（临时禁止交通）令

The A1 Trunk Road (Blunham to Wyboston) and the A421 Trunk Road (Renhold/Great Barford Interchange to Black Cat Roundabout) (Bedfordshire) (Temporary Restriction and Prohibition of Traffic) Order 2014
2014年A1干道（布伦汉姆至威士顿）及A421干道（仁恒\/大巴福交汇处至黑猫环岛）（贝德福德郡）（临时限制及禁止交通）令

The A421 Trunk Road (A4280 St Neots Road/Renhold Interchange, Bedford Southern Bypass) Eastbound Entry Slip Road (Temporary Prohibition of Traffic) Order 2010
2010年A421主干道（A4280 St Neots Road\/Renhold Interchange Bedford Southern Bypass）东行入口支路（临时禁止交通）令