The charge is the lender's queue position at the security. A first charge bridge sits alone — no mortgage ahead of it — and gets first claim on sale proceeds. A second charge sits behind an existing mortgage: the first lender gets repaid in full before the second sees a penny. That queue position drives everything else — pricing, leverage, and how much paperwork the two lenders exchange.
When a second charge is the right call
You own a property with a cheap long-term mortgage you'd hate to disturb, and you need capital for the next purchase, a tax bill, or works. Redeeming a 2021 fixed rate to raise money would be financial vandalism; a second charge leaves it untouched and borrows against the equity above it. The maths has to respect the whole stack — lenders measure combined loan-to-value, first charge plus second, and generally want the total inside 70–75% on residential.
The practical differences
Second charges price higher — the queue position is riskier, so expect a premium of roughly 0.2–0.4% per month over an equivalent first charge as of July 2026. They also involve a third party who owes you nothing: the first-charge lender, whose consent (or at least notification, depending on their terms) is usually needed, sometimes via a deed of priority that fixes how much each lender can claim. Some mortgage lenders respond in days. Some take weeks, and that timeline belongs to them, not to you or the bridging lender.
Third charges and beyond
They exist. A handful of lenders will sit third in the queue where the equity genuinely supports it. Pricing reflects the seat.
Check your mortgage conditions before planning a second charge — the consent clause decides your timeline. And if the first charge is small, compare the honest total cost of refinancing everything onto one bridge; sometimes the "clever" second charge is dearer than the simple answer.