A study by University of Hull academic Anna Einarsdóttir shows that gay people still suffer discrimination and homophobia in the work place.
Ms Anna Einarsdóttir examined the attitudes at six institutions, a prison, a financier, an international retailer, a charity and a NHS trust — all of whom requested anonymity — and the Royal Navy which was happy to be named.
"The major finding was lesbians, gay men and bisexuals are more likely to be exposed to bullying and discrimination in the workplace," she told the Hull Daily Mail.
"People weren't necessarily exposed to directly homophobic remarks.
"A lot were very scared homophobic comments were being made behind their backs, or they overheard conversations about others."
She said that fellow workers often did not realise that their behaviour to their gay colleagues was inappropriate.
"To draw a comparison with racism, people were very clear that racist jokes weren't appropriate, but homophobic jokes were a bit more unclear," she said.
"I think still the message needs to be sent from management that banter needs to be challenged.
"It's also really important we have open lesbians, gay men and bisexuals in top positions.
"Management needs to take an active role in making sure this is on people's agenda."