#BBCAskThis: Ben Brown speaks to Sian Berry

During the European Parliamentary elections campaign the main UK parties will be interviewed on the BBC News Channel.

The Green Party co-leader, Sian Berry, answers questions sent in by BBC News viewers.

#BBCAskThis- Ian Blackford

#BBCAskThis- Nigel Farage

#BBCAskThis: Chuka Umunna

#BBCAskThis: Vince Cable

#BBCAskThis: Ashley Fox

#BBCAskThis: Richard Braine