The Labor Party leader in the U.K who took on Thatcher in 1983 (and likely would have won were it not for the Falklands War), Michael Foot, described himself as a 'libertarian socialist.'
He was a former journalist who was something of a philosopher (much more so than a practical politician) and he had something of a well thought out philosophy on being a libertarian socialist. He's hardly the only one either.
This is Noam Chomsky (yuck) on Libertarian Socialism.
https://www.youtube.com/watch?v=b3m4aRQ9QvQThis is RationalWiki on Libertarian Socialism:
Libertarian socialism is the most anti-authoritarian form of socialism. It's often used as a synonym for anarchism, although not all anarchists subscribe to socialist thought and some self-described libertarian socialists, such as Daniel De Leon, reject elements of anarchism. Libertarian socialism often takes elements of democratic socialism, such as decentralized planning and self-managed workplaces, to their extreme, while also opposing things such as police and prisons, hoping for a community-run "restorative justice" system, and hoping to make as many decisions as possible through consensus by assemblies and councils. The former British Labour Party leader Michael Foot described himself as a libertarian socialist in a 1965 interview where he stated that he believed in socialism that was designed to "get the greatest (amount of) freedom for individuals".
https://rationalwiki.org/wiki/Socialism#Liberal_socialism
