Hi M
All of Ulster Bank's mortgage rates are quoted as SVR + or SVR - a margin.
When they took out the loan, there must have been some feature of it which justified such a high margin over SVR. Maybe it was a 100% loan? I don't remember them having such a large margin.
Yes, it's perfectly legal to set the rate like that. Not only is it legal, it's a very fair way of doing it, as they pass on rate cuts to existing customers, which some other lenders don't.
The problem is that the SVR at 4.3% is very high.
Your friend will not be able to switch to another lender until their LTV is below 80%, or possibly 90%.
They should speak to Ulster Bank and ask for a reduction. They will probably be refused, but there is no harm in asking.
Brendan