26.—(1) The Department is designated as the regulatory body for the purposes of these Regulations.
(2) The Department must ensure that charges for the use of railway infrastructure imposed by the infrastructure manager comply with the requirements of Part 4 and Schedule 2.
(3) Negotiations between an applicant and the infrastructure manager about the level of infrastructure charges shall only be permitted if these are carried out under the supervision of the Department and, if such negotiations are likely to contravene the requirements of these Regulations, it shall be the duty of the Department to intervene.
(4) The Department must exchange information about its—
(a)work;
(b)decision making principles; and
(c)practice
with other national regulatory bodies for the purpose of co-ordinating decision making principles across the Community.
(5) Where the Department by virtue of regulations 18(7)(b), or 28(2), prescribes the manner and form of any notification, appeal or complaint to be lodged in accordance with those regulations, the Department must make that prescription and details of such manner and form publicly available.