Will a missed mobile phone or utility payment stop me getting a mortgage?

A single late mobile or utility payment rarely stops a UK mortgage in 2026, but two or more missed payments in the last 12 months — or any entry flagged as a formal default — will knock you off the sharpest high-street rates and may mean applying with a specialist lender at 0.5–1.5 percentage points higher.

Why does a £35 phone bill even show up?

Because since 2018–2019 UK mobile operators and most utility suppliers have reported to all three credit bureaus (Experian, Equifax and TransUnion) — not just when you default, but on every monthly payment cycle. Your file records each month as a status code:

Status 0 — paid on time.
Status 1 — one month late.
Status 2–5 — two to five months late.
Status 6 — default (typically after 3–6 consecutive missed payments).

A single “Status 1” is usually ignored by high-street lenders if it’s isolated and cleared within 30 days. Two Status 1s in quick succession start to matter. A Status 2 or worse is a serious flag. A Status 6 becomes a formal default and stays on your file for 6 years.

A credit report showing a payment status timeline with Status 1 markers — Status 1 markers rarely block a mortgage, but a run of two or three starts to affect pricing.

How do the big lenders actually treat it?

Scenario	Halifax / Nationwide / Santander	Specialist impact
One Status 1 marker, cleared in 30 days	Typically ignored	None
2–3 isolated Status 1s over 12 months	Accepted with explanation; may shave borrowing 5–10%	None
Status 2+ in last 12 months	Usually declined at best-buy tier	Near-prime specialist at +0.4–0.8pp
Default (Status 6) in last 12 months	Declined	Specialist at +1.0–1.5pp
Default in last 24–36 months, satisfied	Some lenders still say yes	Minor premium

Lender policies change — Halifax, Nationwide and Santander publish internal adverse-credit guides to brokers and these shift roughly twice a year.

Worked example

Take a couple earning £62,000 joint, buying at £230,000 with a 10% deposit. One applicant missed a £42 mobile bill in September 2025 (Status 1 for one month, cleared), then paid on time ever since.

High-street outcome: accepted. 5-year fix at 90% LTV near 5.20%, roughly £1,240/month on 25 years.
If the same applicant had three Status 1 markers in 12 months: likely declined by Halifax, accepted by Accord or Kensington’s near-prime range at around 5.70% — about £65/month more.

The rate difference is small per month but compounds over a 5-year fix (~£3,900). Timing applications so the markers are at least 6 months old materially improves pricing.

What about council tax and water bills?

Council tax arrears are reported differently. They don’t usually show on bureau files, but if they escalate to a liability order at magistrates’ court it appears as a CCJ-style entry. Water companies are inconsistent — Thames Water and Severn Trent report to Experian; some regional suppliers still don’t. Broadband and energy do report. The safe rule: assume anything on direct debit that gets missed is visible to lenders within 30–60 days.

What to do if you’ve got a recent marker

Pay it off immediately and let 3 months of clean history land before applying.
Check all three bureaus — a marker can sit on one file and not the others. Dispute any that are wrong (wrong date, already cleared, not yours).
If the missed payment was due to a billing error or disputed fee, ask the operator to amend the marker. They will if you can show the dispute log.
Don’t apply via the high street if you’ve got unresolved markers; a declined mainstream application creates a hard search that then sits on your file for 12 months, which itself puts off the next lender.

Our guide on improving your credit score before applying walks through the six-month run-up.

The common misconception

People assume “once it’s paid, it’s gone.” The record stays for six years regardless. But mortgage lenders weight recency far more than presence — a Status 1 from three years ago, with no issues since, is almost invisible at underwriting. A Status 1 from last month is a live flag. If you’ve got a minor marker on a mobile or utility account, the cheapest move is usually to wait 6 months of clean payments, then apply — not to pay a broker to muscle an application through today at specialist pricing.

This is information, not regulated advice. Adverse-credit policies change regularly; a whole-of-market broker will know which lender is softest on your shape of history.