employee DC pension pots, with the other 4.75% used for deficit recovery (plus management and running costs). UCU, whose objections to these proposals had been overruled, proceeded to ballot successfully for industrial action in an attempt to secure a more favourable settlement for members, leading to the 2018 USS pension dispute. 2019 Scheme cost increases Following the 2018 strike action, contributions from employees and employers increased substantially: Member contributions increased, initially from 8% to 8.8% of salary. Then from 1 October 2019, to 9.6%. Subject to review, this is planned to increase to 11% from 1 October 2021. Corresponding employer contributions increased from 18% to 19.5%, then (from 1 October) to 21.1%, with a planned increase to 23.7% planned for 2021. For members earning over the salary cap (c. £58,000), employer contribution dropped to 12% for earnings above this threshold, with the difference (about 9% of salary) being used to pay down the overall scheme deficit. 2019 exit by Trinity College, Cambridge On 15 March 2019, in a move that came to be dubbed 'Trexit' (an allusion to Brexit), the Council of Trinity College, Cambridge voted to withdraw the college unilaterally from USS as of 31 May 2019, replacing the USS scheme with a defined benefits scheme, to avoid the college bearing responsibility for other pensions in the UK higher education system in the event of foreclosures in the sector. The buyout reportedly cost the college £30m. The move prompted some Cambridge academics to boycott supervising Trinity College students, with over 450 Cambridge academics pledging to withdraw all labour from the college by 19 June. Cambridge University's graduate student union supported the boycott, discouraging postgraduate students from taking up teaching for Trinity. The General Secretary elect of UCU, Jo Grady, published an open letter calling on the college's fellows to change their course, arguing that to do so was in their interest and the interest of the USS pension scheme generally. On 21 June 2019, Trinity's fellows voted by 73 votes to 46 to leave USS. In October "several" fellows, including the historian Alexandra Walsham, resigned their fellowships. Reportedly 550 Cambridge staff opted out of discretionary work with Trinity, and Trinity students began to report difficulty finding supervisors. Protests were staged at the inauguration of Trinity's new master, Sally Davies. The University and College Union considered a boycott. In February 2020, Arundhati Roy had cancelled her Clark Lecture in English