The influential IFS has published its analysis of the fiscal plans of the parties, and it says that neither the Tories or Labour have credible spending plans. The IFS says

that these parties are ‘not being honest’ with the public and that Labour would be ‘unable to deliver its plans’. This analysis did not even include the £58bn WASPI cost. A no deal scenario under the Tories would require borrowing even more than Labour.  The LibDem plans are on the other hand are seen as ‘radical’ but involving lower levels of borrowing than either of the other two. The IFS says that the £50bn remain bonus is plausible. See https://www.ifs.org.uk/election/2019/manifestos