Economic Secretary and City minister John Glen (pictured) has called for more to be done to crack down on 'macho' culture in the workplace in Britain

Bosses need to do more to end 'macho Mad Men' culture and 'backwards attitudes' towards women in the workplace, according to a Treasury minister.

The Government launched its Women in Finance charter in 2016 to get more women in senior roles in in the industry.

Yesterday it was announced 300 companies have now signed up to the scheme, but Economic Secretary and City minister John Glen insists there is still more to be done.

Speaking to business leaders yesterday Glen called for companies to appoint 'male diversity champions'.

They would promote diversity, become allies to women in the office and encourage men to take shared parental leave, while 'backwards attitudes' towards female members of staff at finance firms still exist, reports The Telegraph.

He told business leaders: 'Words alone will not buck decades of indifference.

'We need deeds and I am calling on men working in financial services today to help confront this problem.

'It is 2018 - corporate attitudes have to change and you must embrace gender equality.'

His warnings come after five men fired from one of the UK's top advertising agencies claimed they were dismissed because of a 'new kind of racism' against white, straight men.

The group of former JWT London employees are lodging claims of racism and sexism against their old bosses.

They were told to leave their roles following the appointment of a new creative director Jo Wallace.

It comes after five former employees of advertising agency JWT London are lodging claims of racism and sexism after they were fired as part of a diversity drive launched by Jo Wallace (pictured), its new creative director

Introducing herself as a gay woman at an introductory conference, she vowed to 'obliterate' JWT's 'Mad Men' reputation of being almost solely made up of straight, white men.

Ms Wallace is known 'as a fearless champion of female success' and follows her crusade of 'changing the white, privileged, male status quo of the creative industries', according to JWT's website.

Former employees warned The Times last week that bosses risked 'swapping one form of racism for another' in the process of creating diversity in the workplace.'

One source said: 'If someone had stood up on the stage and said it's our ambition to purge JWT of young black lesbians, we'd be on the front page of the papers, and rightly so.

'Swapping one kind of discrimination for another as some sort of silver bullet is shocking.'

Progress has been in improving conditions and pay for senior women in the finance industry since the Treasury introduced its charter two years ago.

Companies that provide almost half of the country's finance servivces are now signed up.

And today Women and Equalities minister Penny Mordaunt will pledge £600,000 to helping vulnerable women return to work after spending time as a carer.