What Happens on Broadband Switch Day in the UK?

By Dr Alex J Martin-Smith, Strategic Lead

Direct answer: What happens on broadband switch day depends on the network and whether an engineer visit is needed. In many cases, your new service starts remotely and you connect the new router. In others, an installation appointment is required. Your current provider normally stops the old service as the new one goes live.

• One Touch Switch means your new provider usually manages a straightforward residential switch.
• Keep your current router connected until the agreed changeover date, unless your new provider tells you otherwise.
• Check the total contract cost, setup charges, contract term and stated future price changes before the order is final.
• A move to full fibre can need an engineer visit, particularly where the property has not used that network before.

What happens on broadband switch day with One Touch Switch?

For an eligible home broadband switch, your new provider is your main point of contact. One Touch Switch went live on 12 September 2024 and is run by TOTSCo. The process is designed so that the customer contacts only the new provider, which coordinates the switch with the losing provider (TOTSCo, 2024). That removes the need to cancel an old service separately in many standard switching cases.

Before the changeover, the new provider should confirm the activation date and explain whether equipment will arrive by post or an engineer needs access. Keep these messages, as they set out the order details that matter if the date changes or a charge appears unexpectedly.

On the day itself, the old connection may stop first, followed by the new one becoming active. The exact sequence varies by network and address. If the service has not started by the agreed date, use the new provider's support route rather than assuming the order has failed. It may be completing a scheduled activation or awaiting a final network check.

Will I lose internet on broadband switch day?

You may have a short interruption, but the length depends on the type of connection and installation work required. A switch using existing equipment can be relatively straightforward because the connection is changed remotely. A first installation of FTTP, also called full fibre, cable or an altnet service can involve more work at the property, so a longer gap is possible.

Plan for the possibility of some downtime if you work from home, run a small business or rely on the connection for essential tasks. Download any documents you need beforehand and make sure the new router, power supply and cables are easy to find. If you have an installation appointment, leave enough time for the visit rather than arranging it around an immovable meeting.

Do not disconnect the old equipment early unless your new provider specifically tells you to. The existing service may be needed until the handover is complete. Once the new line is active, follow the supplied setup instructions and allow time for the router to establish a connection before changing settings or moving cables.

Do I need an engineer on broadband switch day?

An engineer is usually needed only where the new service requires physical work, such as bringing full fibre to the property or fitting new equipment. Your order confirmation should make this clear before switch day. If access is required, someone authorised to let the engineer in must be present. Renters may also need to check whether any proposed work affects the landlord's property or communal areas.

An engineer visit can be necessary when a property has no suitable connection for the network you have chosen, or where an external cable and an internal entry point must be installed. The work needed is address specific. A neighbour's experience is useful context, but it is not a reliable promise of what your home will need.

What should I check before switching broadband?

Check the whole contract, not just the monthly headline price. The meaningful comparison is the total cost across the minimum term, including any setup fee, delivery charge and stated price changes. Current monthly prices are postcode variable and can change during a campaign, so treat any deal shown online as illustrative until the order journey confirms it for your address.

New contracts must now show any mid contract rises in pounds and pence at the point of sale. Ofcom's rules took effect from 17 January 2025 and ban inflation linked mid contract rises in new consumer contracts (Ofcom, 2024). Read the wording carefully. A stated increase can still affect what you pay over the full term, even where the initial monthly price looks attractive.

Check the minimum contract length alongside the price. A shorter term can suit a renter or someone expecting to move soon, while a longer term may be appropriate if you expect to stay put and the total cost is clear. Also confirm whether the address can receive FTTP, FTTC, cable or an altnet connection. Availability, not advertising, determines the realistic choice.

What router setup is needed on switch day?

Use the router supplied for the new service first, because it is configured for that provider and connection type. Connect it only after the service is due to go live, unless the provider's instructions say otherwise. Place it in an open, central area where practical, away from enclosed cupboards and large obstructions that can weaken Wi Fi coverage.

Give the router time to start fully. Its lights and the instructions provided with it should indicate whether it has connected. If the service is active but coverage is poor in one room, test nearer to the router before deciding the broadband line is slow. Wi Fi performance inside a home and the speed reaching the property are related but different issues.

For remote workers and micro businesses, test the connection with the devices and rooms that matter most before the next working day. A connection suitable for light browsing may not suit frequent large uploads, video calls or several people working simultaneously. Choose a speed tier based on how the household or business actually uses the connection, rather than an unfamiliar technical label alone.

What happens to my old broadband bill after I switch?

Your old provider should issue a final bill, but you should check it against your contract and switch date. The final amount may include service used up to the end date, any credit due, or charges connected with leaving before the minimum term. Do not cancel a direct debit before the final bill has been settled or any refund has been received, unless the provider confirms a different arrangement.

Review the bill for charges you did not expect. Compare it with the order information and your previous contract, particularly if you switched before the minimum term ended or moved home. If something is unclear, ask the old provider to explain the charge in writing. Citizens Advice can provide consumer guidance if a billing dispute is not resolved directly.

Keep your new provider's confirmation too. It should show the service start date, minimum term, equipment arrangements and the pricing information agreed at sale. This simple paper trail is useful if the first bill is different from what you understood during checkout.

What happens on broadband switch day if I am moving home?

Moving home is often a new availability check rather than a simple transfer of your existing service. The broadband options at your current address may not exist at the new one, even on the same street. Check the postcode and exact address early, especially if you need full fibre for home working or want to avoid an installation delay.

Give the new provider the move date and ask whether the property needs an appointment. Avoid assuming that a visible cable or socket guarantees an immediate activation. The network may still need to confirm the connection route, equipment or capacity at that address.

If your existing contract has time left, ask about the options before placing a new order. The right choice depends on the contract terms, availability at the new property and the cost of any early exit. A transparent comparison should help you assess these points together, rather than treating the monthly price as the only decision.

Broadband switch day FAQs

These answers cover the practical questions most households ask before a switch.

Do I have to cancel my old broadband myself?

For an eligible switch using One Touch Switch, you normally deal with the new provider, which coordinates the process with the old provider. One Touch Switch is run by TOTSCo and was introduced on 12 September 2024 (TOTSCo, 2024). Check your order confirmation, particularly if you are moving home or changing the type of service.

Can broadband switch day happen at the weekend?

Availability depends on the provider, network and whether an engineer visit is needed. Your order confirmation should state the agreed activation date or appointment window. If the timing is critical, such as for a house move or home working, confirm it before committing and keep a contingency plan for a possible service gap.

Will my Wi Fi password stay the same?

Usually, the supplied new router will have its own Wi Fi network name and password. You can often change these later, but use the supplied details first to confirm the broadband service is working. Keeping the old network name may make reconnecting household devices easier, but it does not improve the underlying line speed.

Is full fibre installed on switch day?

It can be, if the order requires a first FTTP installation and an engineer appointment has been booked. Some addresses already have the necessary equipment, while others need external and internal work. The provider should tell you before activation whether access to the property is required and what preparation is needed.

Can I switch if I am still in contract?

You can place an order, but an early exit charge may apply if your existing minimum term has not ended. Check the current contract terms and the total cost of leaving before deciding. If your contract is ending soon, compare the cost of waiting against the value and timing of the new service.

A calm switch starts with an address level check, clear contract wording and realistic expectations for installation. Enter your postcode on BroadbandSwitch.uk's comparison page to see the broadband options available at your address and assess the total cost before you order.