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1 town · Updated October, 2026

Broadband Deals in Cardiff

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Best Broadband Offers in Cardiff October, 2026

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Read about broadband in Cardiff
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Cardiff is a principal area of Wales. It has 7,172 live residential postcodes, and eight postcode districts lie mainly within it (ONS Postcode Directory, May 2025). Whitchurch has its own broadband page, linked below.

Enter your postcode in the comparison above to see the broadband deals available at your address.

Broadband deals by town in Cardiff

Each town page has the live comparison and lists the postcodes it covers.

  • Whitchurch

    Postcode districts
    CF3, CF5, CF10, CF11, CF14, CF15 (part), CF23, CF24
    Live residential postcodes
    7,140
    Gigabit-capable
    94.3% of premises

Postcode districts in Cardiff

These 8 postcode districts have at least half of their live residential postcodes in Cardiff. Enter your full postcode in the comparison to see the deals for your address.

  • CF3
  • CF5
  • CF10
  • CF11
  • CF14
  • CF15
  • CF23
  • CF24

Sources: ONS Postcode Directory, May 2025 (postcode districts, postcodes and councils); Ofcom Connected Nations, January 2026 (gigabit-capable broadband).

Cardiff broadband FAQs

Still unsure? Call us on 01483 355354 or send us a message.

Which towns in Cardiff have their own broadband page?

One town in Cardiff has its own broadband page on Switch My Broadband: Whitchurch. Enter your postcode in the comparison on this page to see the deals available at your address.

Which postcode districts are in Cardiff?

Eight postcode districts have at least half of their live residential postcodes in Cardiff: CF3, CF5, CF10, CF11, CF14, CF15, CF23 and CF24. Source: ONS Postcode Directory, May 2025.

Which council covers Cardiff?

All 7,172 live residential postcodes in Cardiff are in the Cardiff council area. Source: ONS Postcode Directory, May 2025.

Can I get full fibre in Cardiff?

87% of premises in Cardiff (150,432 of 172,880) could get full fibre, compared with 81% across the UK. Whether your home can get it depends on your address: enter your postcode in the comparison on this page to see the deals available there. Source: Ofcom Connected Nations, January 2026.

How many homes and businesses in Cardiff can get gigabit broadband?

163,119 premises in Cardiff (94.4% of 172,880) could get gigabit-capable broadband, with download speeds of 1 Gbit/s or more; across the UK the figure is 87.8%. Source: Ofcom Connected Nations, January 2026.

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