The act also strengthened the regulatory settlement on mergers and anti-competitive behaviour (parts 3 and 4).

[1] Part 1 of the act dealt with the role and purposes of the UK Green Investment Bank.

[2] A major feature of the act was the merger of the Office of Fair Trading (OFT) and Competition Commission to form a single Competition and Markets Authority (CMA) responsible for both "Phase 1" and "Phase 2" investigations, allowing greater synergy between the two.

[1] The ERRA also strengthened the criminal penalties for cartel behaviour by removing the requirement that such behaviour be dishonest: it "will be enough for prosecutors to show that an individual knowingly participated in one of the categories of criminal cartel agreement ... and that relevant information about the arrangements was not to be given to customers, or published, before its implementation".

[1] The previous merger control regime, which was voluntary in nature, remained in place but the CMA's powers were extended to allow it to require merging businesses to operate independently until its review process had been completed.