Subject to the provisions of this section, nothing in any of the provisions of this Act to which this section applies authorises a highway authority or council, without the consent of the dock, harbour or canal undertakers concerned—
A consent required for the purposes of subsection (1) above shall not be unreasonably withheld, and if any question arises whether the withholding of a consent is unreasonable either party may require it to be referred to an arbitrator to be appointed, in default of agreement, by the President of the Institution of Civil Engineers.
For the purposes of this section, dock, harbour and canal undertakers are to be deemed to be concerned with any river, canal, dock, harbour, basin, lock, reservoir, towing path, wharf, quay or land if it belongs to them and forms part of their undertaking, or if they have statutory rights of navigating on or using it, or of demanding tolls or dues in respect of navigation thereon or the use thereof.
This section applies to section 230(7) and section 294 above and to the provisions specified in Schedule 22 of this Act, but subsections (2) and (3) above do not apply as respect a consent required in relation to section 230(7).
In this section "canal" includes inland navigation.