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Monmouthshire Building Society customer service

Contact number
01633 844 340
Customer support
www.monbs.com
Head office
Monmouthshire Building Society, Monmouthshire House, John Frost Square, Newport, South Wales, NP20 1PX, United Kingdom
Twitter / X
@MonmouthshireBS
Social media
Facebook

Contact details checked on 27 Oct 2026

Why use our complaint platform?

01

Written in minutes

We help you write an effective complaint in minutes. Our AI cyber hornets are trained on thousands of complaint letters that actually worked.

02

We will make some noise!

Your complaint gets the attention it deserves. Our cyber hornets could post it on social media, send it by printed letter or use other escalation tools at our disposal.

03

Your personal case coach

Our AI models open a case file and keep coaching after you file: what to reply, when to push, and how to escalate if nothing happens.

04

You are not alone

Join 73,608 consumers who refused to be ignored. Our community is there for advice while you chase your resolution.

Is Monmouthshire Building Society legit?

Legit

Savings with Monmouthshire Building Society sit with a genuine Welsh mutual, owned by its members rather than shareholders, though the slow part is often proving who you are. When its electronic identity check cannot confirm you, perhaps after a recent move, a new account waits until paper proof of name and address has been checked.

What we checked

  • Building society since 1869
  • Head office in Newport, South Wales
  • Authorised savings and mortgage provider
  • Ratings on other review websites: 4/5

Watch out for

  • A call or email in the Society's name asking you to move money to a new account, which it never does.
  • Paper proof of name and address requested because you recently moved, where one document cannot count as both.
  • A fixed rate bond that pays its interest only at maturity or on the anniversary, not each month.

Monmouthshire account stuck at the ID check?

We help you write it, it gets its own public page, and you can have it sent to Monmouthshire Building Society as a formal letter.

File a Monmouthshire Building Society complaint

Common customer service questions about Monmouthshire Building Society

How do I file a complaint about Monmouthshire Building Society?

Do you have a dispute or a bad customer experience with Monmouthshire Building Society? Report it through our website to maximize the chance of getting it resolved.

We help you write an effective complaint in minutes. Our AI models are trained on thousands of effective complaint letters. Then we push it through emails, social media, paper complaint letters and other tools at our disposal. And you are not alone: our helpful community is there for advice.

How do I contact Monmouthshire Building Society?

Call Monmouthshire Building Society on 01633 844 340, visit one of its branches or agencies in South Wales and the west of England, or use the secure contact form on the society's website. Members can also manage their accounts in the MonBS app. Have your account or mortgage number ready and, for anything about a payment, transfer or closure, the dates and amounts involved.

Interest rate on your statement not what you were told? Raise it here as well, and we push it out to Monmouthshire Building Society by email, social media and printed letters.

How do I make a complaint to Monmouthshire Building Society?

To make a complaint to Monmouthshire Building Society, tell any branch or agency office, call 01633 844 340, write to the Complaints Team at the society's head office in Newport, or use the secure contact form on its website. Say clearly that you are making a complaint, and set out the account involved, what went wrong, the dates and the outcome you want. The society's complaints procedure says that when a complaint cannot be settled quickly, it writes to acknowledge it, names the person handling it and says how long it expects to take, then sends a final response in writing. Keep that final response letter, because it matters for any next step.

ISA transfer or remortgage held up? Bring it through our complaint process: our trained AI opens a case for you and keeps coaching you on what to reply and when to push again.

How do I transfer an ISA from Monmouthshire Building Society?

To transfer an ISA away from Monmouthshire Building Society, ask the new ISA provider to arrange the transfer rather than withdrawing the money yourself, because cash you take out of an ISA yourself usually loses its tax-free wrapper. The new provider sends the transfer request to the society and the money moves directly between them.

Before you start, check whether your Monmouthshire ISA has a fixed rate, because leaving a fixed-rate account early can carry an interest charge set out in its terms. Keep the date of the transfer request and any reference from the new provider, so a delay can be traced to the right side.

Can I take a Monmouthshire Building Society complaint to the Financial Ombudsman Service?

Yes: the Financial Ombudsman Service handles complaints about financial businesses in the UK, and it covers complaints by Monmouthshire Building Society customers about the society's savings, mortgage and other financial services. The Financial Ombudsman Service generally expects Monmouthshire Building Society to have had the chance to put things right first, so keep a record of every call, branch visit, letter and reference.

Mortgage application stuck on a valuation? We help you write the complaint in minutes, with every request and date set out in order.

What do people complain about most at Monmouthshire Building Society?

Nothing has been reported about Monmouthshire Building Society here yet. Our research shows what typically goes wrong at building societies: ISA transfers that take longer than expected, fixed-rate bonds that mature onto a lower rate before the saver has chosen what to do, mortgage applications and remortgages held up by valuations or paperwork, withdrawals and closures delayed by identity checks, and problems logging in to the app or online account.

Bond rolled onto a lower rate before you chose? Be the first to report it: your case opens the record for the next Monmouthshire saver with the same problem.

What happens after I submit my complaint?

Your complaint gets its own public page on Complain.biz and we get to work: we bring it to the attention of Monmouthshire Building Society through emails, social media, paper complaint letters and other tools at our disposal.

And we stay with it after you file. Our trained AI opens a case file for you and keeps coaching: what to reply, when to push again, and how to escalate if nothing happens.

Can other consumers help me with my Monmouthshire Building Society complaint?

Yes. We have an active community of consumers, and complaints here are public: people who ran into the same problem with Monmouthshire Building Society can give you advice or back you up with their own story. A complaint with a community behind it is much harder to overlook.

Monmouthshire Building Society complaints

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Monmouthshire Building Society complaints per month

Dec 2025 - Nov 2026

Complaints filed on Complain.biz about Monmouthshire Building Society in each of the last twelve months.

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  • 0 Mar
  • 0 Apr
  • 0 May
  • 0 Jun
  • 0 Jul
  • 0 Aug
  • 0 Sep
  • 0 Oct
  • 0 Nov

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How Monmouthshire Building Society compares

Monmouthshire Building Society customer service compared to others in the Banks category.

Company Complaints Biggest problem
Revolut 17 complaints Money held or account blocked
HSBC 4 complaints
Barclays 1 complaint
Lloyds Bank 1 complaint
Monmouthshire Building Society (this page) 0 complaints No complaints yet
Nationwide Building Society 0 complaints No complaints yet
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