2017 Access Undertaking

  • Approved Access Undertaking
  • Variations
  • Ongoing Compliance

DBCT Management's 2017 access undertaking came into effect on 16 February 2017. The undertaking is subject to amendment through a draft amending access undertaking (DAAU) process under the QCA Act.

The most recent 2017 access undertaking is based on the approvals listed below.

Date approved

Approved undertaking and DAAUs

16 February 2017

2015 DBCT DAU (amended), which became the 2017 AU

16 June 2017

Incremental Expansion DAAU

21 June 2018

2018 Modification DAAU

20 September 2018

Trading SCB DAAU


Show more

Since the 2017 access undertaking was approved, DBCT Management has proposed amendments through various DAAUs under the QCA Act.

The QCA can approve or refuse to approve a DAAU. Each DAAU that was approved has amended the 2017 access undertaking.



Incremental Expansion Study DAAUs

Approved on 16 June 2017

Modelling DAAU

QCA ceased consideration on 15 December 2017

Modification DAAUs

Approved on 21 June 2018

Outturn Inflation (letter)

Proposal accepted

Remediation Allowance DAAU

Withdrawn on 3 October 2018

Trading SCB DAAU

Approved on 20 September 2018

Show more

We monitor DBCTM's ongoing compliance with its 2017 access undertaking.

DBCTM is obliged by its undertaking to seek annual approval of certain matters from us (e.g. NECAP, RAB roll-forward).

The QCA also assesses ad hoc requests from DBCTM for approval of matters required by the undertaking, such as review events.

Compliance activity


RAB roll-forward




Approved on 16 June 2017

Approved on 21 June 2018

Non-expansion capital expenditure (NECAP)

NECAP 2017

NECAP 2018


Approved on 13 July 2017

Approved on 21 June 2018

Review events

April 2018

June 2018

August 2018

November 2018

Approved on 19 April 2018

Approved on 21 June 2018

Approved on 19 July 2018

Approved 26 November 2018

Show more