The Labour Party's finances

Just a quickie, because I'm stupidly busy. The Labour Party are teetering on the brink of bankruptcy, so we hear. To their horror, some of the donors who loaned The Labour Party cash have actually asked for it back: we believe this to be to the tune of £2 million. This has reputedly necessitated the sale of their headquarters, but other debts mean that this will only raise about £0.5 million. The Labour Party has shed thousands of supporters and are having something of a cash crisis; so much so that they had had to hire formerly respected actors to shill for them.

So, my question is this: if the Labour Party goes bust, can they still head the government? Would they have to call a general election? And if not, why not?—for how can a party that cannot even run their own finances be allowed to run the finances of the entire country?

Still, given that they are bankrupting this country, it is hardly surprising that their party is doing the same if their cavalier attitude to other people's money extends outwith The Gobblin' King's offices...