By Ali Lyon Rachel Reeves will vow to “fix the foundations of our economy” in a much anticipated speech to parliament today in which she will reveal the date of the budget and prepare the ground for spending cuts. Accusing the previous government of “covering up the true state of the public finances” the Chancellor is expected to set out a slew of new measures which will involve to spending cuts “within the financial year”. This will be delivered through a new Office of Value for Money, which, the government claims, will tap already existing civil service resources to “put an end to wasteful s…