# Best broadband deals UK 2026: full fibre from £19 a month, with vouchers up to £170

> Lightning Fibre has the lowest start price, £19 a month for 6 months on 1Gbps or 2.5Gbps in covered East Sussex postcodes. Grain fixes the price for 18 months with a free router. Broadband Genie lists 137 deals with vouchers up to £170. Rise Fibre gives a choice of 24-month, 12-month or 30-day terms. Your Co-op pays £20 to new members.

Last checked: 2026-10-23. Page: https://topreferrals.co.uk/compare/best-broadband-deals-uk-2026

## Key takeaways
- Lightning Fibre: £19 a month for the first 6 months on 1Gbps or 2.5Gbps, free install, unlimited data, 24-month contract.
- Grain: full fibre from 250Mbps to 2Gbps on 18-month fixed prices, with a free router and standard install.
- Broadband Genie: Vodafone Full Fibre 910 at £26.00 a month with a £170 voucher choice, or EE Full Fibre 900 at £26.99 with a £140 reward card.
- Rise Fibre: full fibre up to 1Gbps on 24-month, 12-month or 30-day contracts, with your real prices after a postcode check.
- Your Co-op Broadband: a free first month plus a £20 broadband reward for new members.

## Compared offers
- **[Rise Fibre](https://topreferrals.co.uk/referrals/rise-fibre)** — you get Up to 1Gbps fibre (Up to 1Gbps full fibre; 24-month, 12-month or 30-day plans).
  - Link: https://topreferrals.co.uk/go/rise-fibre
- **[Lightning Fibre](https://topreferrals.co.uk/referrals/lightning-fibre)** — you get From £19 a month (£19 a month for 6 months on 1Gbps or 2.5Gbps fibre).
  - Link: https://topreferrals.co.uk/go/lightning-fibre
- **[Your Co-op Broadband & Mobile (OurCoop)](https://topreferrals.co.uk/referrals/your-co-op-broadband-mobile)** — you get Free month + £5 to £25 (Free first month plus £5 to £25 SIM or £20 broadband).
  - Link: https://topreferrals.co.uk/go/your-co-op-broadband-mobile
- **[Grain](https://topreferrals.co.uk/referrals/grain)** — you get 250Mbps to 2Gbps (Full fibre up to 2Gbps, fixed price, free router).
  - Link: https://topreferrals.co.uk/go/grain
- **[Broadband Genie](https://topreferrals.co.uk/referrals/broadband-genie)** — you get Up to £170 voucher (Up to £170 voucher or reward card on fibre deals).
  - Link: https://topreferrals.co.uk/go/broadband-genie

Full fibre broadband can start under £20 a month, and some providers add a voucher on top. Five UK offers are verified here: what each costs, how long the contract runs, and who can order.

Every one of them starts with the same step, a **postcode check**. Your address sets the packages and the price, so check yours before you choose.

## Lightning Fibre: the lowest start price

[Lightning Fibre](/referrals/lightning-fibre) charges **£19 a month for the first 6 months** on its **1Gbps or 2.5Gbps** package. Install is free, data is unlimited and the contract runs 24 months. It is open to new customers in covered **East Sussex** postcodes.

**Take it if:** you live in a covered postcode and want gigabit speed without an install bill.

## Grain: fixed prices and a free router

[Grain](/referrals/grain) runs full fibre from **250Mbps to 2Gbps**. Each package sits on an **18-month fixed-price contract** with no in-contract price rises, and the **router and standard installation are free**. A Price Match Guarantee applies. Grain connects only addresses on its network, so enter your postcode first.

**Take it if:** you want a price that cannot move for a year and a half.

## Broadband Genie: pick a deal, get a voucher

[Broadband Genie](/referrals/broadband-genie) is a comparison page with **137 deals**. Enter your postcode, then choose from fibre deals from Vodafone, EE and Sky. Two examples from the offers page: **Vodafone Full Fibre 910 at £26.00 a month with a £170 voucher choice**, and **EE Full Fibre 900 at £26.99 with a £140 reward card**. Deals run on 24-month contracts. Claim your reward from the provider after install.

**Take it if:** you want the widest choice and a voucher in your pocket.

## Rise Fibre: your choice of contract length

[Rise Fibre](/referrals/rise-fibre) sells full fibre with speeds of **up to 1Gbps**. Enter your postcode to see the packages and prices at your address, then pick a **24-month, 12-month or 30-day** contract.

**Take it if:** you want the option of a short contract.

## Your Co-op: free month and £20

[Your Co-op Broadband & Mobile](/referrals/your-co-op-broadband-mobile) gives new members a **free first month** and a **£20 welcome reward** on broadband. Joining as a member is free, and you enter your Membership Number when you order. Broadband prices stay fixed for the whole 24-month contract, and it is sold only where your postcode is covered.

**Take it if:** you are a Co-op member, or happy to become one.

## How to choose a broadband deal

1. **Coverage first.** Run the postcode check on each provider, because only some will reach your door.
2. **Speed you need.** 250Mbps to 1Gbps suits most homes. 2Gbps and 2.5Gbps are for heavy households.
3. **The real monthly price.** Add the intro months to the later months and divide by the term.
4. **Contract length.** Shorter terms keep you flexible. Fixed-price terms protect you from rises.
5. **Extras.** Free install, a free router, a voucher or a free month all cut your first-year cost.

## Our verdict

**Lightning Fibre for the lowest price where it covers you, Grain for a fixed price, Broadband Genie for a voucher and the most choice, Rise Fibre for a short contract, and Your Co-op for a free month.** Check your postcode on three of them in five minutes and take the best offer for your address.

Switching mobile too? See the [best SIM only deals](/compare/best-sim-only-deals-uk-2026), and pair a broadband switch with cashback from our [best cashback sites](/compare/best-cashback-sites-uk-2026).

## Side by side

|  | Lightning Fibre | Grain | Broadband Genie | Rise Fibre | Your Co-op |
| --- | --- | --- | --- | --- | --- |
| What you get | £19 a month for 6 months | 250Mbps to 2Gbps, free router | Up to £170 voucher or reward card | Full fibre up to 1Gbps | Free first month + £20 |
| Speeds | 1Gbps or 2.5Gbps | 250Mbps to 2Gbps | Fibre deals from Vodafone, EE and Sky | Up to 1Gbps | Fibre where your postcode is covered |
| Contract | 24 months | 18 months, fixed price | 24 months | 24-month, 12-month or 30-day | 24 months, fixed price |
| Extras | Free install, unlimited data | Free router and standard install, Price Match Guarantee | Voucher or reward card, claimed after install | Prices shown after your postcode check | Free first month |
| Who qualifies | New customers in covered East Sussex postcodes | New customers on Grain's network | UK households passing a postcode check | Addresses Rise Fibre covers | New Co-op members where covered |
| Code or link | Link | Link | Link | Link | Link |

## FAQ

### What is the cheapest full fibre broadband in the UK?
Lightning Fibre starts at £19 a month for the first 6 months on its 1Gbps or 2.5Gbps package, with free install and unlimited data on a 24-month contract. It is open to new customers in covered East Sussex postcodes only. Elsewhere, Broadband Genie's offers page lists 137 deals you can sort by your postcode.

### How do I know which broadband I can get at my address?
Every offer here starts with a postcode check, and your address sets the packages and prices. Rise Fibre, Grain, Lightning Fibre and Your Co-op sell only where their network reaches, while Broadband Genie compares what is available at your postcode.

### What does a fixed-price contract mean?
The monthly price stays the same for the whole term. Grain's packages sit on an 18-month fixed-price contract with no in-contract price rises, and Your Co-op's broadband prices stay fixed for the 24-month contract.

### How do I get the voucher or reward card?
Order a deal that shows the voucher through Broadband Genie, then claim the reward from the provider after your line is installed. The offers page shows Vodafone Full Fibre 910 at £26.00 a month with a £170 voucher choice and EE Full Fibre 900 at £26.99 with a £140 reward card.

### Is there a broadband deal with no 24-month contract?
Rise Fibre offers a 30-day contract alongside its 12-month and 24-month options, and Grain's contract is 18 months. The shorter the term, the more flexibility you keep, so compare the monthly price across terms at your address.

### Do I need to be a Co-op member?
Joining Your Co-op as a member is free, and you enter your Membership Number when you order. New members get a free first month and a welcome reward of £20 on broadband.