Two mortgages or one?

Anonymousneedshelp

We currently have our family home mortgaged at around 50% LTV and a second dependant relative mortgage mortgage on the wife's mother's home (she was stung by an interest only mortgage). The interest rate is slightly higher on this second mortgage but we could potentially pay this off early by taking equity out of our family home. 
My question is besides a small financial saving due to the interest rates, what are the positives/negatives of doing this and consolidating to only one mortgage?
Thanks

Vienss

Hey, consolidating sounds smart for your setup—paying off that higher-rate interest-only one early. Positives: One easy payment simplifies budgeting, frees up cash flow long-term, and keeps things tidy for your PAYE job. Negatives: Bumps your LTV (say to 70%+), hikes remortgage fees (~£1k+), and risks more exposure if house prices dip. Chat a broker to crunch numbers—worth it if fees < savings!

kingstreet

Will the increased borrowing take you into a higher LTV band? If it does it may result in a higher rate for all your borrowings, not just the 'relative's' mortgage.