If I was asked to think of recent terrorist atrocities in Uk that I can remember would be 7/7, Manchester Arena bombing, Borough Market, London Bridge and the park in Reading - although not sure if that was just a nutter who hated gays.
Outside of Uk in western countries would be Paris (this thread) the lorry on Nice beach, the NZ right wing cunt, Tunisian beach and the recent Moscow one.
Sure there must be many that I cannot recall but being a right wing bigot I mostly only remember the Islamist ones.