Contract and costs
- Are you in contract, and when does it end?
- Any early termination charges?
- Are price rises fixed in pounds and pence, or variable?
Switch broadband in the UK: factual, step-by-step guide
Use this guide to switch with confidence. It covers the usual UK switching journey, what to check before you order, and how to avoid surprise costs.
Last updated: 31 December 2025
Before you start, get these facts
Performance and needs
- Current download, upload, and latency (test at peak time if you can).
- How many people and devices use the connection at once?
- Any must-haves, such as mesh Wi-Fi, static IP, or parental controls?
Landline and number
- Do you still use a landline number?
- If yes, ask to port it during sign up, and avoid cancelling early.
Tip: If you are not sure what speed you need, use the Broadband speed guide first.
1) Check availability by postcode and compare deals
Availability changes street by street. Compare deals available at your address, then judge value on total cost, contract length, and the service you actually need.
| Compare this | Why it matters | Quick check |
|---|---|---|
| Total cost | Monthly price is not the full story. Add setup, delivery, installation, and apply any bill credit. | Work out the first year and full term cost. |
| Speed and upload | Download helps streaming and browsing. Upload matters for video calls, cloud backups, and sending files. | Choose headroom for peak time. |
| Contract length | Longer terms can be cheaper but reduce flexibility. | 12, 18, or 24 months are common. |
| Price rises | Some deals increase during the contract. Newer contracts should be clear about the amount. | Look for pounds and pence, and the date it applies. |
| Wi-Fi setup | Many speed issues are Wi-Fi issues. Bigger homes may need mesh or pods. | Check for Wi-Fi guarantees or add-ons. |
Open the live comparison
Disclosure: We may earn a commission if you take a deal via our comparison journey. It does not change the price you pay. Always check provider terms before you buy.
2) Place your order
Sign up with the new provider. Confirm the activation date, delivery dates for the router, and whether an engineer visit is required.
One Touch Switch
For most fixed broadband and landline switches, you contact the new provider, and they handle the switching process for you.
Engineer visit vs self install
Engineer visits are common for new full fibre installations or some network changes. Many other switches use self install by plugging in the new router at the right time.
Keep your landline number
If you need your number, ask to port it during sign up. Avoid cancelling the old service early, as that can risk losing the number.
Cooling off
If you order online or by phone, you will usually have a 14 day cooling off period. Read the provider’s cancellation terms and any charges that can apply if service has started.
3) Go live and verify
On activation day, follow the provider instructions. If you can, test on Ethernet first to confirm the line speed, then optimise Wi-Fi.
- Keep notes: take screenshots of the order confirmation, promised speeds, and activation date.
- Test properly: run a few tests at different times, and record download, upload, and latency.
- Return equipment: if your old provider requests kit back, return it within the deadline to avoid charges.
Special cases that catch people out
Switching between networks
If you switch between different networks, installation and timing can vary. Many people plan a short overlap to avoid gaps, especially if they work from home.
Switching to or from mobile broadband
Mobile broadband (4G or 5G home broadband) can be treated differently from fixed-line switching. You may need to cancel the old service separately once the new one is live.
Price rises during contract
Check whether the deal includes in-contract price rises, and whether the amount is shown clearly. If you are comparing offers, focus on total cost across the term, not just the headline monthly figure.
Service issues and compensation
Some providers participate in automatic compensation for certain delays and missed appointments. If service quality matters to you, it is worth checking if your provider participates and what it covers.
FAQs on switching broadband in the UK
How long does a switch take?
Many switches complete in 1 to 2 weeks, depending on provider lead times, router delivery, and whether an engineer visit is needed.
Do I need to cancel my old broadband?
Often, no. For most fixed-line switching, you order from the new provider and they manage the switching process. If you switch to or from mobile broadband, you may need to cancel separately after the new service is live.
Will I lose service on switch day?
Downtime is often brief for like-for-like switches. If an engineer visit or new installation is required, timing varies, so some people plan a short overlap.
What about exit fees and cooling off?
Out of contract, you can usually switch without exit fees. In contract, early termination charges may apply. Orders made online or by phone normally include a 14 day cooling off period.
Can renters switch broadband?
Yes. Check tenancy permissions for installations, and consider contract length. Mobile broadband can be useful where fixed-line installation is not practical.