In 1983 parliamentary boundaries were realigned to those of the local government districts created in 1974: the town of Dorking became part of Mole Valley district, and just over half of the previous area was transferred to the Mole Valley seat for national elections which took in territory to the north from elsewhere.
In 1983, the boundaries of parliamentary constituencies were adjusted to align with those established by local government districts in 1974. Dorking town became part of the Mole Valley district, and a significant portion of its previous area was transferred to the Mole Valley seat for national elections, which included territory from the north.