Inheritance tax on a cash gift

[greenjersey]

Hi, I want to help my daughter purchase a house by taking out a mortgage of £150,000 on my home. Perhaps surprisingly the Nationwide have offered to lend me this sum repayable by the time I am 85. I am aged 72 and in fair health and my wife is 67 and in robust good health. On the assumption that my wife has far better chance of surviving for seven years would it make sense for me to give the money to my wife who would then gift it to our daughter? If so are there any time limits i.e. could I do the transfer one day and then my wife do her transfer the next?
Thanks in advance for your help.

[maths]

If you own the home and you are the borrower a transfer of the amount borrowed by you if transferred to wife who then transfers the amount to daughter is likley to be seen as a straight gift by you (wife merely acting as a conduit).