A much belated announcement that the 2020 International Medieval Congress at Leeds was also cancelled in March.
Further details are available at https://www.imc.leeds.ac.uk/imc-2020-cancelled-due-to-coronavirus-covid-19/.
It looks like the organizers are planing some type of virtual event this summer. Updates can be found on the conference main page at https://www.imc.leeds.ac.uk/.