The Guardian Media Group announced Friday it had agreed to sell the world's oldest Sunday newspaper, The Observer, to online news company Tortoise Media, brushing aside strikes by staff.

Journalists at The Guardian and The Observer are in open revolt after bosses approved the sale of the world’s oldest Sunday newspaper to a loss-making start-up, even after staff went on strike ...

UK readers may notice some differences to the Guardian’s daily website on Wednesday and Thursday, as a result of the strike, as well as in its print editions, the newspaper said. NUJ members ...