Article 4 Permitted deviation
In constructing or maintaining any scheduled work Network Rail may—
(a)
deviate laterally from the lines or situations shown on sheet no. 1 of the Order plans within the limits of deviation for that work shown on that sheet; and
(b)
deviate vertically from the levels shown on the Order sections—
(i)
in the case of Work No. 1, upwards by a maximum of 0.5 metres;
(ii)
in the case of Work No. 3, upwards by a maximum of 1.5 metres; and
(iii)
in the case of so much of Work No. 1 as is within plots nos. 1 and 11, and Work No. 3, to any extent downwards.