343 real plans in the US, last updated 28 Oct 2026How we check

UK provider · deep dive

Three, plan by plan

Three offers broadband plans in the UK. Every plan in our data is below, with the real monthly cost worked out, not just the headline price.

Country
UK
Plans in our data
20
Real monthly range
£10.00 to £35.00
Contract terms
none listed, 12 months, 24 months
A smiling woman works on a laptop at a desk in a bright home office lined with bookshelves.

Lowest real monthly cost here

£10.00/mo

Across 20 plans in our data, fees and promos included.

In short

We list 20 Three plans, match them to your postcode, and rank them by real monthly cost: from £10.00/mo.

Plans from Three

20 plans in our data

  • Lowest monthly hereNo fixed term listed

    40GB 1 month Data Pack

    Standard £10.00/mo · Nationwide

    £10.00/moSame price all 24 months
    £10.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£10.00/moover 24 months, estimated
    Details
  • No fixed term listed

    40GB 1 month Data Pack

    Standard £10.00/mo · Nationwide

    £10.00/moSame price all 24 months
    £10.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£10.00/moover 24 months, estimated
    Details
  • No fixed term listed

    60GB auto-renew Data Pack

    Standard £10.00/mo · Nationwide

    £10.00/moSame price all 24 months
    £10.00 per month. Same price all 24 months.

    Offer

    • Set up auto-renew and save 10%
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£10.00/moover 24 months, estimated
    Details
  • No fixed term listed

    60GB auto-renew Data Pack

    Standard £10.00/mo · Nationwide

    £10.00/moSame price all 24 months
    £10.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£10.00/moover 24 months, estimated
    Details
  • No fixed term listed

    120GB auto-renew Data Pack

    Standard £13.50/mo · Nationwide

    £13.50/moSame price all 24 months
    £13.50 per month. Same price all 24 months.

    Offer

    • Set up auto-renew and save 10%
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£13.50/moover 24 months, estimated
    Details
  • No fixed term listed

    120GB auto-renew Data Pack

    Standard £13.50/mo · Nationwide

    £13.50/moSame price all 24 months
    £13.50 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£13.50/moover 24 months, estimated
    Details
  • No fixed term listed

    100GB 1 month Data Pack

    Standard £15.00/mo · Nationwide

    £15.00/moSame price all 24 months
    £15.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£15.00/moover 24 months, estimated
    Details
  • No fixed term listed

    100GB 1 month Data Pack

    Standard £15.00/mo · Nationwide

    £15.00/moSame price all 24 months
    £15.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£15.00/moover 24 months, estimated
    Details
  • 24-month contract

    Home Broadband 24 month plan

    Standard £17.00/mo · Nationwide

    £17.00/moSame price all 24 months
    £17.00 per month. Same price all 24 months.

    Offer

    • Get up to £300 credit on us, Switching has never been easier
    • We’ll credit your Three account with the amount of your final bill from your previous provider, up to £300.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£17.00/moover 24 months
    Details
  • 24-month contract

    Home Broadband 24 month plan

    Standard £17.00/mo · Nationwide

    £17.00/moSame price all 24 months
    £17.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£17.00/moover 24 months
    Details
  • No fixed term listed

    240GB auto-renew Data Pack

    Standard £18.00/mo · Nationwide

    £18.00/moSame price all 24 months
    £18.00 per month. Same price all 24 months.

    Offer

    • Set up auto-renew and save 10%
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£18.00/moover 24 months, estimated
    Details
  • No fixed term listed

    240GB auto-renew Data Pack

    Standard £18.00/mo · Nationwide

    £18.00/moSame price all 24 months
    £18.00 per month. Same price all 24 months.
    Real monthly costPromo months, normal months and one-off fees added up, then divided by the months.£18.00/moover 24 months, estimated
    Details

Showing the 12 lowest-priced of 20 plans. Plans are listed per area: enter your postcode to see the ones sold where you live.

Where the monthly cost comes from

Each plan as a stack: every layer is part of the contract total, and the top of the stack is the real monthly cost we rank on. The dashed plate is the price an advert would lead with.

40GB 1 month Data Pack

  • 24 months × £10.00£240.00

£240.00 ÷ 24 months = £10.00/mo real monthly cost, estimated: the top of the stack

Advertised price £10.00/mo: the dashed plate

40GB 1 month Data Pack

  • 24 months × £10.00£240.00

£240.00 ÷ 24 months = £10.00/mo real monthly cost, estimated: the top of the stack

Advertised price £10.00/mo: the dashed plate

60GB auto-renew Data Pack

  • 24 months × £10.00£240.00

£240.00 ÷ 24 months = £10.00/mo real monthly cost, estimated: the top of the stack

Advertised price £10.00/mo: the dashed plate

60GB auto-renew Data Pack

  • 24 months × £10.00£240.00

£240.00 ÷ 24 months = £10.00/mo real monthly cost, estimated: the top of the stack

Advertised price £10.00/mo: the dashed plate

120GB auto-renew Data Pack

  • 24 months × £13.50£324.00

£324.00 ÷ 24 months = £13.50/mo real monthly cost, estimated: the top of the stack

Advertised price £13.50/mo: the dashed plate

120GB auto-renew Data Pack

  • 24 months × £13.50£324.00

£324.00 ÷ 24 months = £13.50/mo real monthly cost, estimated: the top of the stack

Advertised price £13.50/mo: the dashed plate

Best for

4 picks from our data

Picked by the content engine from the Three plans above, using the same real monthly cost and allowances. It compares these plans with each other, not with the whole market.

Cheapest option
Three 60GB auto-renew Data Pack at 10.00 GBP/mo
Most data
Three Home Broadband 24 month plan with unlimited data
Fastest download speed
Three Home Broadband 24 month plan at 150 Mbps
No fixed-term contract
Three 120GB auto-renew Data Pack

How pricing works in your area

1 area on record
A long row of brick terraced houses with chimney stacks under a cloudy sky.
Your postcode decides which plans are shown: offers are listed for regions, and only the ones listed for your area are ranked.

Each plan is listed for a region. When you search a postcode, we find its region and only rank the plans listed for it. Plans for other regions are left out, never just pushed down.

RegionPlansLowest real monthly
No region restriction20£10.00/mo

The real monthly cost adds promo months, standard months and one-off fees, takes off guaranteed credits, and divides by the months in the term. Read the method. Region matching is not an address check: the provider confirms availability at checkout.

Search your postcode for broadband

What to watch for

11 things to check
Two people reading through printed contract paperwork at a grey table, with a pen, a smartphone and a tablet beside them.
Read the term, the price after the promo and any exit fee before you sign.
  • Three 40GB 1 month Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three 60GB auto-renew Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three 120GB auto-renew Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three 100GB 1 month Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three 240GB auto-renew Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three 200GB 1 month Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three Unlimited data auto-renew Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Three Unlimited data 1 month Data Pack: No fixed contract length provided; using a 24-month comparison term as an estimate.
  • Mid-contract price rises are not included unless known. Check the provider's annual price change terms before you switch.
  • Home Broadband 24 month plan: 24-month fixed term. No early termination fee on record; check before you sign.
  • Home Broadband 12 month plan: 12-month fixed term. No early termination fee on record; check before you sign.

Frequently asked questions

8 questions
Is Three 40GB 1 month Data Pack on a fixed contract?
No, Three 40GB 1 month Data Pack has no fixed contract term (rolling/month-to-month).
Is Three 60GB auto-renew Data Pack on a fixed contract?
No, Three 60GB auto-renew Data Pack has no fixed contract term (rolling/month-to-month).
Is Three 120GB auto-renew Data Pack on a fixed contract?
No, Three 120GB auto-renew Data Pack has no fixed contract term (rolling/month-to-month).
Is Three 100GB 1 month Data Pack on a fixed contract?
No, Three 100GB 1 month Data Pack has no fixed contract term (rolling/month-to-month).
Is Three Home Broadband 24 month plan on a fixed contract?
Yes, Three Home Broadband 24 month plan has a fixed contract length of 24 months.
Is Three 240GB auto-renew Data Pack on a fixed contract?
No, Three 240GB auto-renew Data Pack has no fixed contract term (rolling/month-to-month).
Is Three 200GB 1 month Data Pack on a fixed contract?
No, Three 200GB 1 month Data Pack has no fixed contract term (rolling/month-to-month).
Is Three Home Broadband 12 month plan on a fixed contract?
Yes, Three Home Broadband 12 month plan has a fixed contract length of 12 months.

Where broadband costs matter

Compare for the way you live

An engineer in a hard hat and overalls laying cable into a pavement access point outside a home, with a yellow toolbox beside him.

Compare Three in your area

Is Three the cheapest broadband for your postcode?

Search your postcode and we rank Three against every other broadband listed for that area, on real monthly cost. Sponsored placements are labelled and never change the order.

Search your postcode →

A UK residential street of red-brick Victorian houses with bay windows, cars parked along the kerb and a 20 mph sign.
Plans are listed per region: your postcode decides which ones are ranked.