From Thursday, the public will see the force's Change Needs You campaign aimed at driving up the number of new constables in the UK's largest police force on billboards, the London Underground and across social and digital platforms.The campaign has been launched amid falling officer numbers and Sir Mark said that the force's level of diversity is "growing - it is not where we want it to be, but it is going in the right direction".

From Thursday, the public will see the force's Change Needs You campaign aimed at driving up the number of new constables in the UK's largest police force on billboards, the London Underground and across social and digital platforms.The campaign has been launched amid falling officer numbers and Sir Mark said that the force's level of diversity is "growing - it is not where we want it to be, but it is going in the right direction".