You can never be entirely sure until the deadline has passed. An MP can always have a last minute change of heart, after all, but ConHome sources say that they are 99% sure that no more Tory MPs will be standing down.
Nominations close formally on 20th April but a Tory MP having a change of heart needs to give their Associations decent notice.
Here's Jonathan Isaby's full list of Tory retirees as at the end of December, to which only Peter Ainsworth and John Maples' names were added. As well as saving General Election Night I think Jonathan deserves credit for helping to encourage Tory MPs to retire quickly. His letter smoked them out!
Tim Montgomerie