Roughly one in five UK mortgage applications gets turned down at some stage. If it has happened to you, the worst thing you can do is immediately apply elsewhere. That second hard search on your credit file makes the next lender even more cautious.\n\nWhy Lenders Say No — The most frequent reasons are failed affordability assessments (your income does not stretch far enough after commitments), credit file issues the applicant was unaware of, property valuation problems, or discrepancies between what you declared and what the underwriter found. Sometimes it is as mundane as a missed mobile phone payment from three years ago that you forgot about.\n\nYour First Move — Request a Subject Access Request from the lender. Under GDPR, they must tell you the specific reason for the decline within one calendar month. Without this detail, any next step is guesswork.\n\nFix What You Can — Pull your credit files from Experian, Equifax, and TransUnion (all offer free statutory reports). Look for defaults, CCJs, missed payments, or financial associations with someone who has poor credit. Dispute any errors directly with the credit reference agency. Pay down outstanding credit card balances to below 30% of your limit. Register on the electoral roll if you have not already.\n\nTiming Your Next Application — Wait at least three months before applying with another lender, longer if the decline was affordability-related and your circumstances have not changed. Each hard credit search remains visible for 12 months. Use a whole-of-market mortgage broker who can soft-search multiple lenders without leaving a mark.\n\nSpecialist Routes — If the decline relates to adverse credit, self-employment complications, or unusual property types, a specialist broker can identify lenders whose criteria genuinely fit. Lenders like Aldermore, Kensington, and Bluestone exist specifically for cases that high-street banks cannot accommodate.