"So what do we learn? Two essential things, I suggest. First, Labour borrows less than the Conservatives. The data shows that. And second, Labour has always repaid debt more often than the Conservatives, and has always repaid more debt, on average. The trend does not vary however you do the data. I have tried time lagging it for example: it makes no difference. 

Or, to put it another way, the Conservatives are the party of high UK borrowing and low debt repayment contrary to all popular belief.
https://www.taxresearch.org.uk