Roger Waters has vowed to perform a ''celebratory gig'' on the border between the US and Mexico once President Donald Trump scraps his plans for a security wall.

The 73-year-old music legend has been an outspoken critic of the new American leader and his controversial policies, especially his idea to tighten security into America by limiting the amount of Mexicans coming into the country by building a huge wall.

Waters' was responsible for writing Pink Floyd's seminal 1979 album 'The Wall' - which deals with the concept of building an emotional wall - and he toured the LP in its entirety again in 2010.

Waters admits he would be interested in resurrecting the spectacular stage show again if Trump was to withdraw his policy and make the American public realise there is no ''us and them''.

Speaking at the launch of 'The Pink Floyd Exhibition: Their Mortal Remains' at The May Fair Hotel in London on Thursday (16.02.17), he said: ''I get asked quite often if I'd do 'The Wall' again because I stopped a couple of years ago. I've always said I'd do it again if they ever figure out what to do about Israel and Palestine and get rid of that appalling security barrier.

''If there was a resolution and we could realise there is no 'us and them' and that we're all human beings and we all need to figure out how to live together because at the moment ... as an act of celebration, if that moved towards a humane way of organising ourselves, I would be only too happy to perform that concert in some place that was significant geographically.

''If that happened to be the border between the United States and Mexico then absolutely. But there needs to be an awakening period ... before something like that can happen.''

Roger - who now lives in the US but was born and grew up in Surrey, England - also took the opportunity to take a swipe at the UK's new Conservative Prime Minister Theresa May.

He added: ''Trump and Theresa May and the right wing as you know is raising its ugly head all around the world so yeah as an act of celebration it would be.

''The sewers are clogging with greedy powerful men as we speak and they are backing up and that is what is causing this stuff.''

Waters famously performed 'The Wall' in Berlin, Germany, on 21 July, 1990, with array of special guests such as Bon Jovi, Scorpions, Bryan Adams, Sinead O'Connor, Cyndi Lauper, Joni Mitchell, Marianne Faithfull and Van Morrison to celebrate the fall of the Berlin Wall - which separated East Germany and West Germany - on November 9, 1989.