The Museums, Libraries and Archives Council (MLA) has achieved its target of encouraging 3,000 individual museums, libraries and archives to sign the Learning Revolution pledge.
According to the MLA, signing the pledge commits the institutions to do "all they can" to promote lifelong learning and signals their commitment to be at the forefront of providing informal education.
The latest three operators to sign the pledge were the Historic Royal Palaces, The Charles Dickens Museum in central London and the Ragged School Museum in east London.
John Barnes, conservation and learning director at Historic Royal Palaces said: "Each year around 3 million people visit the palaces we look after - and every one of those visits is a learning opportunity.
"Our challenge is to provide active and inspiring ways to promote informal learning, alongside our extensive formal education programme."
Culture Minister, Margaret Hodge, said: "Encouraging people to explore and learn through our museums, libraries and archives is really important. And I am pleased that so many of them are doing this by taking part in the Learning Revolution.
"It's good to see the MLA working so closely with the Department of Business, Innovation and Skills to ensure that the sector shows its support and has signed the pledge in such great numbers."
