Bridging loan costs in the UK usually add up to around 7% to 15% of the loan...

https://www.social-bookmarkings.win/bridging-loans-in-the-uk-typically-cost-between-7-and-15-in-total-depending

Bridging loan costs in the UK usually add up to around 7% to 15% of the loan amount. Monthly interest rates typically sit between 0.55% and 1.25%