Victoria Atkins insisted she still had "complete confidence" in the UK's nuclear deterrent.
The planned event has been described as "totally incompatible with the gospel of Jesus Christ".
Glastonbury legend also says Labour leader told him he'll scrap Trident.
'I'm just a bloke who can't se a positive in nuclear bombs.'
Labour leader said he attended event 'in honour of all those who died in Northern Ireland'
Defence secretary says he would authorise first strike.