As a parenthetical note for American readers who might be confused by the terminology: In the UK (and elsewhere in Europe), “government” refers to the elected group of political officials who take control of the structure of state administration with the objective of enacting their governing agenda. This can be confusing to Americans who think of “government” as the entirety of the non-private state apparatus, from legislators to judges all the way down to school principals and clerks at the DMV.
To an American, the fact that Corbyn was an elected member of Parliament means he was “in the government.” But in the UK, he’s not “in government” unless he’s in the party which has achieved a ruling majority and thereby gets installed in a ministerial position. Keir Starmer as Labour leader is similarly in Parliament, but he won’t be in government unless Labour wins as expected and Starmer becomes PM.
Carry on.