Workers have begun a 48-hour walkout, the first in 50 years for the outlet, over a proposal to sell The Observer to Tortoise Media, a digital media start-up.

Journalists from The Guardian and The Observer have gone on strike for 48-hours in protest over a potential sale of the latter. The Observer is The Guardian’s sister paper, which comes out weekly on Sundays.

Journalists at the Guardian and sister publication the Observer are holding a two-day strike in protest at the proposed sale of the Sunday newspaper to Tortoise Media. The first strike at the Guardian in more than 50 years is taking place across Wednesday and Thursday (4 and 5 December).

Nearly 500 journalists have walked out of the Guardian and its sister paper, the Observer, to protest what they see as a betrayal of the paper's values: the planned sale of the Observer to a startup.