@adviceonmortgages
I wouldn't want to use the full amount as I know there is other fees and stamp duty (which would be quite alot on a 400-500k house) but I would be willing to use 40 or so for a deposit
Assuming interest rates stay the same (they will probably go up):
If you buy a £400k house with a £40k deposit and a 25 year mortgage:
Total cost including interest £541k
Monthly repayment £1800
If you buy a £400k house with a £60k deposit and a 25 year mortgage:
Total cost including interest £511k
Monthly repayment £1700
If you buy a £400k house with a £200k deposit and a 25 year mortgage:
Total cost including interest £300k
Monthly repayment £1000
www.moneysavingexpert.com/mortgages/mortgage-rate-calculator/
So putting the full amount into the property saves you £241k in interest and gives you an extra £800 a month to live on over just using £40k. The savings will be even greater if when interest rates go up. You also need to consider how you will afford the payments if interest rates increase (and your monthly payment increases).
You often get a better rate of interest on mortgages with a large (as a percentage of the property value) deposit too.
You do need to get legal advice on how to protect your investment in case of divorce, however.
You should also take advice on capital gains tax if you are taking money from the sale of the property and not reinvesting it in your main home.