Yup, its nickname ("Grauniad") may be about its historically awful proofreading but it's just as politically off-centre as say the Daily Telegraph ("Torygraph") which gets an explicit accusation of political bias right in the nickname.
Every publication is going to have at least editorial bias in what opinions get written, and what stories are covered, at all or in greater profile.
Private Eye - a famous British satirical magazine - has an entire section ("Street of Shame" referring to Fleet Street) about the worst of this (e.g. newspapers taking long term advertiser money and then conspicuously failing to mention grave problems at the advertised business), but it too has its share of blind spots, most famously it took Wakefield's side on the MMR vaccine claims long after mainstream opinion had shifted to focus on the apparent abuse and profiteering by Wakefield, and even after he was struck off it continued to slow walk any suggestion that its coverage had been wrong or misleading. Its coverage for the present pandemic has been... less than stellar also, except in the sense that it criticises the government for doing a bad job, an open goal sometimes missed at a few of the most right-wing papers.
Every publication is going to have at least editorial bias in what opinions get written, and what stories are covered, at all or in greater profile.
Private Eye - a famous British satirical magazine - has an entire section ("Street of Shame" referring to Fleet Street) about the worst of this (e.g. newspapers taking long term advertiser money and then conspicuously failing to mention grave problems at the advertised business), but it too has its share of blind spots, most famously it took Wakefield's side on the MMR vaccine claims long after mainstream opinion had shifted to focus on the apparent abuse and profiteering by Wakefield, and even after he was struck off it continued to slow walk any suggestion that its coverage had been wrong or misleading. Its coverage for the present pandemic has been... less than stellar also, except in the sense that it criticises the government for doing a bad job, an open goal sometimes missed at a few of the most right-wing papers.