Erratum:Testing gravity with wide binary stars like α Centauri

This is an erratum to the paper ‘Testing gravity with wide binary stars like α Centauri’, published in MNRAS, 480 (2), 2660–2688 (2018). Equation 30 in section 5 of the paper is incorrect and should be replaced with the equation below. v ≤ 2ν ext ( 1 + K 3 0 ) (1) As this is a purely typographical error, the rest of the original publication is completely unaffected.