What Credit Score Do You Need for a Mortgage UK?

The question of what credit score you need for a UK mortgage is more complicated than it looks. Unlike in the US where a single FICO score is widely used, the UK has three main credit reference agencies — Experian, Equifax, and TransUnion — each with its own scoring scale and band definitions. A score of 700 means something different on each platform. Even those scores are not what lenders see directly: lenders run your data through their own proprietary models using the raw information from the agencies rather than the consumer-facing scores you view online.

What matters is the pattern of behaviour your credit file reveals — payment history, credit utilisation, length of history, types of credit, and the presence or absence of adverse markers like defaults and CCJs. This guide explains all of it.

UK credit score bands — all three agencies explained

Each of the three credit reference agencies uses a completely different scoring scale. The numbers are not comparable across agencies. What matters is where your score sits within each agency's own band system.

For a mortgage application, being in the Good or Excellent band on any of these scales gives you access to mainstream lenders and competitive rates. Fair scores narrow your lender choice. Poor scores push you towards specialist adverse credit lenders at higher rates.

What lenders actually look at beyond the score

• 📋
  Payment history — the most important factor

  Every missed payment, late payment, default, or CCJ on your file carries significant negative weight. A single missed payment in the last six months can trigger an outright decline at some lenders. A missed payment three years ago with a clean record since is treated very differently. Recency matters enormously.

• 💳
  Credit utilisation

  If you have credit cards with a combined limit of £10,000 and balances totalling £8,500, your utilisation is 85% — a figure that signals financial strain. Most scoring models consider utilisation above 30% suboptimal and above 75% a significant negative. Paying down card balances before applying can improve your score within one to two billing cycles.

• 📅
  Length of credit history

  A longer credit history with consistently good behaviour provides more evidence of reliability. A 22-year-old with only a current account and one year of credit card history has a thin file — not a bad one — but lenders have less data to assess. Building credit history over two to three years before a large mortgage application strengthens the picture considerably.

• 🔍
  Recent hard credit searches

  Every formal application for credit — car finance, a credit card, a personal loan — leaves a hard search visible to lenders. Multiple searches within six months signal potential financial difficulty. In the six months before a mortgage application, avoid applying for any new credit products unless absolutely necessary.

• 🏠
  Electoral roll registration

  Being registered on the electoral roll at your current address is one of the simplest and fastest credit improvements available. It confirms your address and identity, reducing perceived fraud risk. Not being registered is a surprisingly common reason for otherwise clean applications to score lower than expected. Check and update at gov.uk/register-to-vote.

• ⚠️
  Adverse markers — CCJs, defaults, IVAs, bankruptcy

  CCJs, defaulted accounts, IVAs, and bankruptcy remain on your credit file for six years and are visible to every lender. Most high-street lenders will not consider applications with recent adverse markers. Specialist adverse credit mortgage lenders can accommodate these situations but at higher rates and lower LTVs. The specific terms depend on how recent and how severe the issues are.

How credit issues affect your mortgage — impact table

General guidance only. Individual lender policies vary significantly. A mortgage broker specialising in adverse credit can identify the most suitable lender for your specific situation.

Three real borrower credit profiles

How to improve your credit score for a mortgage — step by step

1. 1
   Check all three credit reports before doing anything else

   Get your free statutory report from Experian, Equifax (via ClearScore), and TransUnion (via Credit Karma). Look for errors — incorrect addresses, accounts that are not yours, payments marked as missed that you made on time. Errors are more common than most people expect and can be disputed directly with the agency. Correcting a genuine error can improve your score without any other action.

2. 2
   Register on the electoral roll at your current address

   This is the single fastest credit improvement available and takes five minutes at gov.uk/register-to-vote. Make sure the address matches your bank accounts, credit cards, and driving licence exactly. Address inconsistencies across financial records are a common but avoidable friction point in mortgage applications.

3. 3
   Reduce credit card utilisation below 30%

   Paying down card balances improves your utilisation ratio and your score within one to two billing cycles. You do not need to close the cards — simply reducing the balance is enough. Closing old accounts can actually reduce your score by shortening your average credit history and increasing utilisation on remaining cards.

4. 4
   Do not apply for any new credit in the six months before applying

   Every hard search leaves a footprint visible to lenders. Multiple searches in the six months before a mortgage application signal potential financial difficulty. Use soft search eligibility tools before any credit application to avoid unnecessary hard searches on your file.

5. 5
   Build credit history if your file is thin

   Open a credit card and use it for small purchases paid off in full each month. A credit-builder card works well for this purpose even if the rate is high, because you never carry a balance. Six months of consistent on-time payments makes a meaningful difference to a thin file and can unlock lenders that were previously unavailable.

6. 6
   Settle any outstanding defaults before applying

   Settling a defaulted account changes its status from outstanding to satisfied — which is treated more favourably by most lenders. If you believe any negative entry on your file is inaccurate or statute-barred, raise a dispute with the credit reference agency before your mortgage application rather than after.

How long does credit improvement take?

• 1 to 4 weeks
  Electoral roll registration
  Most electoral roll entries update within a few weeks and are reflected in credit files shortly after — the fastest single improvement available.
• 1 to 2 months
  Credit card utilisation reduction
  Paying down card balances improves utilisation at the next statement date. Most agencies update monthly so improvements appear within one to two billing cycles.
• 1 to 3 months
  Error corrections
  Once a dispute is raised, agencies have 28 days to investigate and respond. Corrections appear on your file once resolved — sometimes sooner if the dispute is straightforward.
• 6 to 12 months
  Building credit history from a thin file
  Six months of on-time payments on a credit card or credit-builder product creates a meaningful improvement and broadens lender access considerably.
• 12 to 24 months
  Reducing the impact of missed payments
  Missed payments remain for six years but their negative impact reduces significantly over time. Most mainstream lenders become comfortable once a missed payment is over two years old with a clean record since.
• 6 years
  Adverse markers drop off completely
  Defaults, CCJs, IVAs, and bankruptcy all drop off the credit file six years from registration — at which point they are no longer visible to lenders and no longer affect your score at all.

Frequently asked questions

• What credit score do you need for a mortgage in the UK?
  There is no single universal minimum. Each lender uses its own model. Being in the Good to Excellent band on Experian (881 plus), Equifax (420 plus), or TransUnion (566 plus) gives you access to mainstream lenders and competitive rates. Fair scores narrow your options. Poor scores push you towards specialist lenders at higher rates. The pattern of behaviour on your file matters more than any single number.
• Can I get a mortgage with a bad credit score in the UK?
  Yes, in many cases. Specialist adverse credit mortgage lenders accommodate applicants with missed payments, satisfied defaults, CCJs, and even discharged bankruptcy — though at higher rates and typically with a larger deposit of 25% or more. The key factors are the severity, recency, and number of credit issues. A satisfied default from three years ago is treated very differently from a CCJ issued last month.
• Does checking your credit score hurt your mortgage application?
  No. Checking your own credit report is a soft search that leaves no trace on your file — completely invisible to lenders. You should check all three agencies before applying for a mortgage. Only hard searches made during formal credit applications are visible to lenders and can temporarily affect your score.
• How long does it take to improve your credit score for a mortgage?
  Electoral roll registration and utilisation reduction show improvements within one to three months. Building a thin file takes six to twelve months. Reducing the impact of missed payments takes twelve to twenty-four months of clean behaviour. Adverse markers like defaults and CCJs remain on file for six years but their negative impact diminishes significantly after two to three years.
• Do all three credit reference agencies have different scores?
  Yes. Experian, Equifax, and TransUnion each use completely different scoring scales — the numbers are not comparable. An Experian 750 sits in the Fair band (721 to 880). An Equifax 750 is well into Excellent (466 to 700). What matters is where your score sits within each agency's own bands, not the raw number. Not all lenders check all three agencies, and different lenders weight the same information differently.

Related calculators and guides