There are ways that this can be done which will still give protection - but you must make sure that the solicitor handling the conveyancing
is fully aware of the position and capable of dealing with it - so please do not just go with the cheapest quote.
The first thing to do is to make the Mortgage Application in Joint names as otherwise your name cannot go on the Title Deeds.
Your Solicitor also needs to be told that you will be holding the Property as Tenants in Common in Unequal Shares - so that your
contribution is fully protected.
Finally it would be sensible to have a Cohabitation agreement drawn up dealing with the financial side of the relationship - and what should happen in the
event that either of you wishes to end the relationship
Doing all of this will ensure that your name is on the deeds; your interest is protected - and that there is a process for ending the relationship
and getting the house sold
I hope that this is of assistance - please ask if you need further details