From the manifesto (platform) of the Conservative Party for the upcoming British election:

In the last three years, 80,000 criminals have been released early from prison because the Government failed to build enough places. We are determined that early release will not be introduced again, so we will redevelop the prison estate and increase capacity as necessary to stop it. Under Labour, the number of foreign criminals in our prisons has more than doubled. We will extend early deportation of foreign national prisoners to reduce further the pressure on  our prison population.