As well as what percentage of your property’s value you want to borrow (i.e., 80%), how much you want to borrow (i.e., £2 million) will also play a part in the options you will have available.
Private banks tend to be able to cater to both higher LTV and higher property, so a 90% loan on a £1.5 million property, for example. Highstreet banks can offer mortgages in the 85% range on high-value property, but this will tend to be capped on property at the £2 million mark. High street lenders can find it challenging to lend against much higher value property.
For properties in the £2.5 million and above range, private banks will, once again, tend to be the go-to parties for financing, and they can offer larger high-value mortgages. That said, because they lend on a case-by-case basis, they may offer slightly less finance against a significantly higher value property.