A declaration of default means FSCS is satisfied a firm is unable to pay claims for compensation made against it.
The Financial Services Compensation Scheme (FSCS) has declared that 30 failed regulated firms in default between 1 November 2019 and 31 January 2020.
These firms include NFS Mortgages Limited of Hawthorne Road in Merseyside and London Capital & Finance plc in Moorgate.
A declaration of default means FSCS is satisfied a firm is unable to pay claims for compensation made against it.
This paves the way for customers of that firm to make a claim for compensation with FSCS.
Jimmy Barber, chief operating officer at FSCS, said: "FSCS provides protection when firms fail, reassuring people and enabling them to buy regulated financial products with confidence.
"We help put people back on track by offering a claims service that is fast and easy for our customers to use, offering support when our customers need it.
"We know it can be a difficult time, so our claim experts are on hand to support you at every stage of your claim.
"It's completely free and we'll tell you straight away if you're eligible to make a claim."