and we are joined 0k, plenty more from these tonight and we arejoined by 0k, plenty more from these tonight and we are joined by senior politicians from seven parties who will be listening and responding to what everyone has got to say. they are, for the conservatives. representing the labour party, said area champion. the scottish national party. ukip, the liberal democrats and plaid cymru join us and for the green party, their co leader. also, give them applause. applause . also, jonathan blake is working with bbc reality check looking at the numbers promises we will hear about by working out what really stacks up. and it is going through comments we have been getting all day on #bbcdebate. first, tonight, after two devastating terror attacks in two weeks, including in manchester, security has become a bigger part of the election campaign, in particular how best to protect british people from future attacks. police numbers in england and wales have fallen by almost 20,000 s