Last year the mobile phone networks overcharged UK businesses and consumers approximately

£ 7,600,000,000

We're here to keep them honest.

We compare

O2 logo Vodafone logo EE logo Business & Consumer
Three logo Tesco logo Consumer Only

Let Billmonitor find out exactly how much you're being overcharged and match you to the right contract

And if you’re mid-contract, our monthly Bill Check-up helps you make the most of it.

Billmonitor analyses your mobile bills

Against 2 million contracts

And matches you to the right new contract

Each month, Bill Check-up reviews your plan and alerts you if you’re free to switch to a new contract

Set up a free account and get free monthly bill monitoring

Bill Analysis

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I'm happy to share my account details to get the most accurate deal

Analyse my online bill
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I don't have online billing

I'm happy to get an estimated deal based on my estimated usage

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William is on the wrong contract and can save £41 this year
Stephen can get the Huawei P20 128GB on the right contract – and save £188 a year
Billmonitor found Christina is on the wrong contract and is paying £41 more than necessary
Taylor is on wrong contract and is overpaying by £30 a year
Billmonitor found Jeremy is on the wrong contract and is paying £207 more than necessary
Louis is already on the right contract - Billmonitor congratulated Louis
William is already on the right contract - Billmonitor congratulated William
Kara can feel happy in the knowledge of already being on the right contract
Chris, one of the few already on the right contract, now knows it for sure
Chris is on wrong contract and is overpaying by £905 a year
Jay, one of the few already on the right contract, now knows it for sure
Scott is on wrong contract and is overpaying by £114 a year
David, one of the few already on the right contract, now knows it for sure
James, one of the few already on the right contract, now knows it for sure
Andrew can save £117 and still get a new Huawei P20 Pro 128GB
Ian is already on the right contract - Billmonitor congratulated Ian
Zoe can save £58 and still get a new Apple iPhone 6S 32GB
Leah can feel happy in the knowledge of already being on the right contract
Mary, one of the few already on the right contract, now knows it for sure
Billmonitor found Ian is on the wrong contract and is paying £172 more than necessary
Jamie now knows how to find a new Apple iPhone 7 32GB and save £124 a year
David can feel happy in the knowledge of already being on the right contract
Ross is on the wrong contract and can save £59 this year
Adrian is on the wrong contract and can save £36 this year
Alice can feel happy in the knowledge of already being on the right contract
Andrew is on wrong contract and is overpaying by £44 a year
Lee can get the Samsung Galaxy S8 64GB on the right contract – and save £314 a year
Billmonitor found Jacob is on the wrong contract and is paying £222 more than necessary
Kelly now knows how to find a new Apple iPhone 8 64GB and save £149 a year
Louis is on wrong contract and is overpaying by £61 a year
Andrew is already on the right contract - Billmonitor congratulated Andrew
Mary is already on the right contract - Billmonitor congratulated Mary
Christian is on the wrong contract and can save £77 this year
Billmonitor found Derek is on the wrong contract and is paying £66 more than necessary
Nico can feel happy in the knowledge of already being on the right contract
Billmonitor found Emma is on the wrong contract and is paying £251 more than necessary
Paul now knows how to find a new Apple iPhone 8 plus 64GB and save £389 a year
Andy is on the wrong contract and can save £40 this year
Elizabeth is on wrong contract and is overpaying by £108 a year
Susan, one of the few already on the right contract, now knows it for sure
Samuel is on the wrong contract and can save £243 this year
Rory is on the wrong contract and can save £51 this year
Amy can feel happy in the knowledge of already being on the right contract
Billmonitor found Monica is on the wrong contract and is paying £44 more than necessary
Liam is already on the right contract - Billmonitor congratulated Liam
Richard is on the wrong contract and can save £273 this year
Robert is on wrong contract and is overpaying by £36 a year
Sharon is already on the right contract - Billmonitor congratulated Sharon
John now knows how to find a new Apple iPhone X 64GB and save £191 a year
David, one of the few already on the right contract, now knows it for sure
Alan can save £173 and still get a new Apple iPhone XR 64GB
Lisa is on the wrong contract and can save £47 this year
James can feel happy in the knowledge of already being on the right contract
Rebekah can feel happy in the knowledge of already being on the right contract
Michael can feel happy in the knowledge of already being on the right contract
Joanna, one of the few already on the right contract, now knows it for sure
Emma is on wrong contract and is overpaying by £87 a year
Alison can get the Apple iPhone XR 128GB on the right contract – and save £266 a year
Emma is on wrong contract and is overpaying by £39 a year
Donna is on the wrong contract and can save £103 this year
Curtis is on the wrong contract and can save £114 this year
Sarah is on wrong contract and is overpaying by £28 a year
Henry is on the wrong contract and can save £151 this year
Billmonitor found Caroline is on the wrong contract and is paying £108 more than necessary
Billmonitor found Joseph is on the wrong contract and is paying £65 more than necessary
Billmonitor found Scott is on the wrong contract and is paying £28 more than necessary
Lucia can save £51 and still get a new Apple iPhone 8 64GB
Gordon is on wrong contract and is overpaying by £115 a year
Desmond, one of the few already on the right contract, now knows it for sure
Sara is on the wrong contract and can save £188 this year
Gary, one of the few already on the right contract, now knows it for sure
Carolyn can feel happy in the knowledge of already being on the right contract
Billmonitor found Leslie is on the wrong contract and is paying £635 more than necessary
Laura is already on the right contract - Billmonitor congratulated Laura
Aria is already on the right contract - Billmonitor congratulated Aria
Anders, one of the few already on the right contract, now knows it for sure
Clare can feel happy in the knowledge of already being on the right contract
William is already on the right contract - Billmonitor congratulated William
Ofcom approved logo

Billmonitor was the first mobile tariff comparison service to be accredited by Ofcom, the UK telecommunications regulator, and forms part of the UK government’s MiData project.

Three Mathematicians

Billmonitor was launched in 2009 by three mathematicians in Oxford.

Using advanced maths to turn the complexity of bills and tariffs into simple, actionable intelligence, it allows users to make informed decisions and save money in a market where the networks do their best to keep things murky.

Testimonials

Barts Cancer Institute saved 42% on their corporate bills

London-based Investment Management Firm saved £92,000

Central Surrey Health reduced their costs by nearly 50%

AMS Aircraft saved 58% on out of allowance costs

Amius saved 37.5% through improved tariff and bundle selection
Billmonitor

How much could you save?

How many devices do you have?

Let us know how many devices (phones and tablets) you have and we’ll give you a rough estimate of how much you’re being overcharged.

Potential savings
*
*more than 1,000 devices?
Call us: 0800 689 3035
Bill analysis

Now get it spot on.

If you give us your phone account details for online billing, our evidence-based engine can 'crunch' your bill and discover the best plan for your business (49% savings average).

We’ll then arrange a free, no obligation consultation to talk you through the findings.

Don’t worry if you don’t have your account details to hand, just send us your contact details via the form below and we’ll email you about how to find out how much you could save.

How it works

Case Study

Billmonitor helps CSH Surrey, Surrey's largest NHS community services provider.

I was initially sceptical about Billmonitor’s ability to achieve savings as our average cost per connection was already less than £10 on public sector tariffs but they really exceeded our expectations and reduced our contract costs by nearly 50%.
See case study

Research

The Billmonitor investigation into the B2B mobile provider ‘Wild West’ reveals that only one in ten SMEs get a fair deal from their providers, while Ofcom turns a blind eye.

Read the report

Case Study

Billmonitor helps Barts Cancer Institute, the leading public sector research centre.

It was important for us to find a truly independent advisor who would also be able to support the BCI throughout the switching process and Billmonitor truly exceeded our expectations.
See case study

Case Study

Billmonitor helps a London-based investment management firm save £92,000.

Through identifying historical billing errors and selecting tariffs and bundles matching the client's usage, Billmonitor saved the firm £92,000. Billmonitor will now periodically review for further optimisations as part of our post-implementation service.
See case study
Ofcom approved logo

Billmonitor’s consumer service was the first mobile tariff comparison service to be accredited by Ofcom, the UK telecommunications regulator, and forms part of the UK government’s MiData project.

If you do nothing else, ask these three questions to your network provider

1
‘How many dormant devices do we have?’
Hint:

Most businesses have dormant devices they’re not aware of (and that the networks won’t tell you about unless you ask). This alone means the average business is being overcharged by more than 10%.

2
‘How much does it cost us when we go over our monthly allowances for data or international calls?’
Hint:

Many businesses incur massive charges when they go over their monthly allowances, especially for data and international calls. Having the right bundles can prevent this and dramatically reduce costs.

3
‘What percentage of our bill is allocated to handsets?’
Hint:

There is no such thing as a free handset – the higher your monthly tariff, the larger the handset fund you should be offered. On average a good handset fund represents about 40% to 50% of your total contract costs.

Three Mathematicians

Billmonitor was launched in 2009 by three mathematicians in Oxford.

Using advanced maths to turn the complexity of bills and tariffs into simple, actionable intelligence, it allows users to make informed decisions and save money in a market where the networks do their best to keep things murky.

Read more

Billmonitor is fundraising on Seedrs!

We want to give you the opportunity to own a piece of Billmonitor and become one of our shareholders.

Invest in Billmonitor today and help us build a better way for you to choose your mobile service!

Go to investment page
Billmonitor is fundraising

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See you soon,

The Billmonitor team