Sir Bob Geldof and Imelda May have been announced as part of the line-up for a musical and arts event launched to raise money for Ukraine.The Night for Ukraine will be held at the Roundhouse in north London on Wednesday evening, with the funds raised being donated to the Disasters Emergency Committee (DEC) appeal to provide aid to people fleeing Ukraine.Ukrainian born pop duo Bloom Twins, who helped organise the event, will also perform alongside The Pretenders star Chrissie Hynde and Ukrainian baritone and principal artist for the Royal Opera House Yuriy Yurchuk.Irish singer Geldof said he was keen to...