Sue Gray, notably known for her role in the investigation of Covid rule-breaking at former Prime Minister Boris Johnson's Number 10, formally took her seat in the House of Lords on Thursday, adopting the title Baroness Gray of Tottenham.

The ceremony coincided with a significant transition in her political career, occurring approximately four months after she left her position as a senior civil servant in the Cabinet Office.

During the introduction ceremony, Baroness Gray donned the traditional scarlet robes and swore allegiance to King Charles III.

She was accompanied by notable figures including former Whitehall chief and independent crossbencher Lord O'Donnell, as well as Labour peer Baroness Harman.

Among the attendees was her son, Labour MP Liam Conlon.

Baroness Gray became a household name following her appointment as the lead investigator into allegations of misconduct related to parties held at Downing Street during the pandemic.

She took over the investigation after her boss, then-cabinet secretary Simon Case, recused himself due to similar allegations involving his own office.

Her report played a significant role in the public discourse surrounding accountability within the government.

After stepping down from her civil service role, Gray assumed the position of chief of staff to Labour leader Sir Keir Starmer.

However, her move raised questions regarding the neutrality of civil servants, particularly amid criticism from Conservative members following her transition.

Reports indicated that she earned a salary exceeding that of the Prime Minister, further intensifying scrutiny of her position in the Labour Party post-election.

In October 2023, Gray announced her resignation from her role in the Labour Party, stating that she was becoming a distraction to the government's work, signifying tumult in her new position.

Initially anticipated to begin a new role as envoy to the nations and regions, she ultimately decided against this appointment following a month-long break.

The addition of Baroness Gray is part of a broader effort initiated by Downing Street to address perceived imbalances in the House of Lords, particularly regarding Labour representation.

Previously, 30 new Labour peers were announced to counterbalance Conservative nominations.

Additionally, Joanne Cash, a barrister and co-founder of Parent Gym, was among six Conservative peers welcomed into the House in this latest round of appointments.

Upon entering the House, new peers typically receive a handshake from the Leader of the Lords; however, Baroness Gray was greeted with a hug from the Lord Privy Seal as she departed the chamber.

This ceremony marks a new chapter in a career that has witnessed significant public attention and controversy.