Yes, the solicitor is correct, however not every bank accepts this, as your partner could turn out to be your spouse and is entitled to 50%of the site. It all depends on the bank.
Italicised and underlined portion above is not true. There is no automatic entitlement to 50% of a spouse's assets.
I know if a husband and wife were to buy a house both names would have to be on the deeds.
Confusing statement. If the husband and wife wish to buy a house jointly well then obviously they would both need to be on the title. But there is no requirement for a husband and wife to buy jointly.