On 5 September 2017, Lady Hale was appointed under the premiership of Theresa May to serve as President of the Supreme Court, and was sworn in on 2 October 2017.

[12] On 12 January 2004, she was appointed the first female Lord of Appeal in Ordinary and was created a life peer as Baroness Hale of Richmond, of Easby in the County of North Yorkshire.

[15] In June 2013, she was appointed Deputy President of the Supreme Court of the United Kingdom to succeed Lord Hope of Craighead.

[17] In December 2018, during an interview to mark the centenary of the Sex Disqualification (Removal) Act 1919, Lady Hale argued that the judiciary needed to become more diverse so that the public have greater confidence in judges.

Hale called for a more balanced gender representation on the UK's highest court and swifter progress promoting those from minority ethnic backgrounds and with "less privileged lives".

[21] On 21 March 2018, the Hong Kong judiciary announced her nomination as a non-permanent judge from other common law jurisdictions of the Court of Final Appeal.

[22] The appointment was gazetted by the Chief Executive of Hong Kong Carrie Lam and took effect 30 July 2018 for a three-year term.

"[24] In June 2021, she revealed her wish of not wanting to be reappointed as a judge in Hong Kong after her three-year term ending in July.

[29] In September 2023, Lady Hale was identified by The Guardian as one of eleven peers who had not sworn or affirmed the oath of allegiance to King Charles III and could not sit or vote in the House of Lords until they had done so.

[30] She made her maiden speech on 23 November 2023, citing "the disruption caused by Covid and [her] own diffidence about whether [she] could make a useful contribution" for not having participated in parliamentary debates since her retirement as a judge.

[31] On 27 June 2011, Lady Hale gave a lecture in memory of Sir Henry Hodge, "Equal Access to Justice in the Big Society" in which she explains the benefits of an inquisitorial Tribunal system over adversarial proceedings.

[32] On 10 September 2015, Lady Hale delivered the Caldwell Public Lecture at the University of Melbourne, Australia, on the topic "Protecting Human Rights in the UK Courts: What are we doing wrong?".

[33] On 2 November 2018, Lady Hale delivered an SLS Centenary Lecture at the University of Essex, United Kingdom, on the topic of "All Human Beings?

This was her first public intervention on the subject since she gave a dissenting opinion in support of the claimant in R (Nicklinson) v Ministry of Justice a decade previously.