Boris Johnson of breaking promises following the controversial announcement, which came amid a series of U-turns on the issue and sparked widespread criticism.Now the PM’s own LGBT adviser has expressed his ‘dismay’ at the plan, which has led to the Government cancelling a landmark equality festival after various organisations pulled out.At the demonstration in Westminster this afternoon, protesters chanted ‘Shame on them (the government)’, ‘keep trans in the ban’ and ‘LGB with the T’, in reference to the lesbian, gay, bisexual and trans movement.There was also a similar protest in Belfast.Campaigner Peter Tatchell told the crowd that the only ban worth having is one that includes everyone.Standing outside Downing Street, Mr Tatchell said: ‘We were promised a total ban.To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video‘(Mr Johnson) has given us a half-baked ban, which we will never ever accept.‘The only ban worth having is a ban for everyone, including trans people.’He added that those who attended had sent a signal to the PM and the rest of the country.Pink, white and blue trans pride flags were out in force as demonstrators held signs saying ‘Pride is a protest’ and ‘Queerness doesn’t need a cure’.It comes after the Government has faced fierce criticism last week over promised legislation to outlaw conversion therapy, and its backtracking on commitments to include transgender people in the ban.At least 100 LGBT+ and HIV organisations pulled out of the UK’s first international conference on LGBT rights, Safe To Be Me, leading to its cancellation.Conversion therapy is a discredited practice attempting to change someone’s sexual orientation through physical,.