[3] In 1965 Irish Life entered the UK market and competed against its former parent, initially under its own name.

[2] In 1940 under new managing director Edmund Farrell its name was changed to Irish Permanent Building Society.

The profitable Irish Life Group was purchased by the government for €1.3 billion, and subsequently sold to Great-west Lifeco in July 2013.

The chief executive of Permanent TSB is Eamonn Crowley, who succeeded Jeremy Masding in that capacity in June 2020.

[13] On 19 February 2013, Great-West Lifeco of Canada announced its acquisition of the Irish Life Group for €1.3 billion.

[15][16] In October 2016, the US bank Cerberus Capital Management bought the UK loan book.

[17] In July 2022, Permanent TSB received approval to acquire a €7.6 billion Ulster Bank loan book by the Competition & Consumer Protection Commission, along with 25 branch properties.

[18] In June 2023, the Irish Government and NatWest Group each sold 5% stakes in the bank leaving them with 57.4% and 11.7% share respectively.

[19] In October 2023, Permanent TSB launched an overhaul of its brand and business, rebranding to PTSB, following its acquisition of a large portion of Ulster Bank which was withdrawing from the Republic of Ireland.