List of the Tory MPs in safest seats (and should survive a GE):
Rishi Sunak
Andrew Jones
Andrew Percy
Edward Leigh
Victoria Atkins
Caroline Johnson
Matt Warman
Gareth Davies
John Hayes
Alicia Kearns
Duncan Baker
Liz Truss
Steve Barclay
Luke Evans
Chris Heaton-Harris
Gavin Williamson
Philip Dunne
Bill Wiggin
Kemi Badenoch
Giles Watling
Nadhim Zahawi
Nigel Huddleston
Luke Hall
James Gray
Geoffrey Clifton-Brown
Laura Farris
Greg Smith
Joy Morrissey
John Whittingdale
Mark Francois
Alex Burghart
Rebecca Harris
Paul Beresford
Jeremy Hunt
Michael Gove
Damian Hinds
Flick Drummond
Ranil Jayawardena
Julian Lewis
Desmond Swayne
Christopher Chope
Simon Hoare
Michael Tomlinson
Chris Loder
Marcus Fysh
Selaine Saxby
Scott Mann
Wendy Morton
It is however a bit more complex than this as this is based on the current boundaries. The boundary review (from May) should favour the Conservatives far more. And there will be MPs who will already be looking for new constituencies (Tatton is due to be abolished for example - thats Esther McVey).
From BBC:
On the whole, areas that have done well economically in recent years will have more MPs - and so more of a say in the House of Commons - whereas the areas that have done less well will have fewer MPs.
So, for example, Buckinghamshire, including Milton Keynes, currently has seven constituencies. Under the proposals it would have eight.
And neighbouring Oxfordshire would go from six constituencies to seven.
On the other hand, the area covered by County Durham, South Tyneside and Sunderland sees its allocation fall from 11 seats to 10
Oxfordshire and Buckinghamshire still look reasonably good for the Tories though it would depend on where the new constituencies are exactly. But it does mean there are going to be a couple of interesting new seats up for grabs and there WILL be something of a prospective seat shake up coming in May anyway. Easier to shift critical MPs around if needed with this opportunity (cough Johnson if he becomes PM again).
So it does make a big difference when a new GE is called.
But the list above is interesting in terms of who survives and who you just can't get rid of no matter what.
If the worst did happen to the Tories this is the most likely core group to rebuild the party from, which is interesting in its own right. Interesting options for a post wipe out shadow cabinet there! There are lots of big names who would leave politics I'm sure.