ADSL Broadband Explained
ADSL is the UK’s old copper ‘standard’ broadband. See what’s available at your address now – including faster fibre – and compare deals side by side.
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ADSL (Asymmetric Digital Subscriber Line) is the older type of ‘standard’ broadband that runs over the copper phone line into your home. It was the most common connection in the UK for years, but it’s slow by today’s standards and is being phased out as the copper network is retired. Most homes can now get fibre, which is faster and steadier. Quotezone compares broadband from 15+ UK providers, so you can check what reaches your postcode and move off copper to a better deal.
What is ADSL?
It is the original mass-market broadband: a copper-line connection that carries data alongside an old-style phone signal. Newer fibre lines do the same job far faster.
How it works
ADSL sends your connection down the same copper wires that once carried your home phone. It needs an active phone line and a microfilter to split broadband from voice.
‘Asymmetric’
The A in ADSL means downloads are faster than uploads. That suited browsing and email, but it struggles with today’s video calls and large uploads.
Why it’s called standard broadband
ADSL is often labelled ‘standard’, ‘basic’ or non fibre broadband to set it apart from fibre. It is the slowest of the widely sold connection types.
Why is ADSL so slow?
ADSL speed depends heavily on the copper between you and the exchange. Unlike fibre, the longer that copper run, the more speed you lose.
Copper limits speed
Copper wire carries data far less efficiently than fibre-optic glass, so the top speeds it can reach are low.
Distance weakens the signal
The further your home is from the local exchange or street cabinet, the weaker the signal and the slower your speed. Rural lines are often slowest.
Shared and ageing lines
Copper lines age and can pick up interference, which makes ADSL speeds less stable than a fibre connection.
ADSL vs fibre: what’s the difference?
The difference is how much copper is in the line. ADSL is all copper; fibre replaces some or all of it with fibre-optic cable, which is far faster and more reliable.
ADSL (copper)
The connection runs on copper phone wire the whole way. Speeds are low and fall with distance from the exchange.
Part fibre (FTTC)
Fibre runs to a street cabinet, then copper covers the last stretch – much faster than ADSL. See fibre broadband.
Full fibre (FTTP)
Fibre runs all the way into your home, with no copper to slow it down – the fastest, steadiest type. See full fibre broadband.
Is ADSL still available in the UK?
Yes, for now – but it is on the way out. The old copper phone network it relies on is being switched off, and fibre has become the standard for most homes.
Still sold, but shrinking
ADSL is still offered where faster lines haven’t been installed, but it is being withdrawn as the copper network is retired.
Fibre has taken over
Fibre now reaches most UK homes, so ADSL is increasingly the fallback rather than the default (Ofcom).
New lines are rarely ADSL
When you sign up today, most addresses are offered a fibre line instead, because it is faster and the copper network is closing.
How do I upgrade from ADSL to fibre?
Upgrading is usually simple: check what fibre reaches your home, pick a deal, and the new provider handles the switch. A new full-fibre line may need a short engineer visit.
Check your address
Enter your postcode, then add your address. Quotezone shows the fibre packages that can actually be installed where you live – or compare broadband deals for your area.
Pick a fibre deal
Compare part fibre and full fibre by speed, price and contract length, then choose the one that suits your household.
Switch with one click
Complete your purchase with the new provider and the move starts under One Touch Switching. The provider arranges the changeover and closes your old service.
When might ADSL still be enough?
ADSL can still suit a light, single-user household or an area without fibre – but for most homes a fibre deal is now faster and similarly priced.
Very light use
For one person browsing, emailing and the odd standard-definition stream, ADSL can still cope.
No fibre yet
In a small number of remote areas, fibre hasn’t arrived, so ADSL or a mobile connection may be the only fixed option for now.
Worth re-checking
Coverage changes street by street as networks build out, so it is worth re-checking your address every so often.
ADSL and the copper switch-off
ADSL is being retired alongside the copper phone network it relies on. The old analogue network (PSTN) is due to be switched off in January 2027, and landlines are moving to digital lines that run over broadband (Openreach). Once the copper is gone, ADSL goes with it.
Fibre has already become the standard for most homes. As of January 2026, full fibre reached 24.9 million UK premises – 82% of homes – while gigabit-capable broadband reached 89% (Ofcom Connected Nations). For most households the sensible move is to check what fibre can be installed at your address before your current deal ends, rather than wait for ADSL to be withdrawn.
Does upgrading from ADSL cost more?
Standard broadband isn’t always the cheapest. Depending on what’s available at your address, fibre deals can start at under £20 a month, with faster tiers costing more.
Often not much
Entry-level fibre is frequently priced close to standard broadband, so moving up needn’t cost a lot more – and sometimes a fibre deal works out cheaper.
Drivers of price
What you pay depends on the speed tier you choose, the contract length and any introductory offers.
Costs shown up front
Quotezone shows the monthly price, full contract cost, setup fees and any in-contract price rise before you sign up – most providers now state the rise as a set amount (Ofcom).
You might also need
Setting up a new connection is a good moment to protect the kit that relies on it.
Gadget insurance
Cover your router, laptops and devices against damage and theft – compare gadget insurance.
Home contents insurance
Protect the tech and contents in your home – compare home contents insurance.
ADSL broadband FAQs
What is ADSL broadband?
ADSL (Asymmetric Digital Subscriber Line) is the older type of standard broadband that runs over the copper telephone line into your home. It needs an active phone line and is the slowest of the widely sold connection types. Downloads are faster than uploads, which is what the ‘asymmetric’ refers to.
Is ADSL still available in the UK?
Yes, for now, but it is being withdrawn. ADSL is still offered where faster lines haven’t been installed, but fibre now reaches most UK homes and is usually offered instead. The copper network ADSL runs on is being retired, so it is increasingly a fallback rather than the default.
ADSL vs fibre – what’s the difference?
The difference is how much copper is in the line. ADSL runs on copper the whole way and is slow, with speeds that fall the further you are from the exchange. Part fibre (FTTC) replaces most of that copper with fibre to a street cabinet, and full fibre (FTTP) runs fibre all the way into your home. Both fibre types are far faster and more reliable than ADSL.
How fast is ADSL broadband?
ADSL is the slowest of the common connection types. Its top speeds are low and they drop the further your home is from the local exchange, so rural lines are often slowest. Fibre packages run many times faster, which is why most households now choose fibre.
Is ADSL being switched off?
ADSL is being retired along with the copper phone network it relies on. The old analogue network (PSTN) is due to be switched off in January 2027, with landlines moving to digital lines that run over broadband (Openreach). Once the copper is gone, ADSL goes with it.
How do I upgrade from ADSL to fibre?
Enter your postcode on Quotezone, then add your address to see the fibre packages that can be installed where you live. Compare them by speed, price and contract length, pick a deal, and the new provider arranges the switch under One Touch Switching. A new full-fibre line may need a short engineer visit.
Do I need a phone line for ADSL?
Yes. ADSL runs over the copper phone line, so it needs an active line and a microfilter to separate broadband from voice. Full fibre is different – it connects through its own box and doesn’t depend on the old copper phone line.
What is standard or non fibre broadband?
‘Standard’, ‘basic’ or non fibre broadband usually means ADSL – the copper-line connection sold before fibre. It is the slowest type still on sale. Providers use the label to set it apart from faster fibre packages.
Ready to move off copper and find a faster connection?
Reviewed by: Piers Murray
Broadband & Mobile Expert
Written by: Katie Gawley
Insurance Content Writer
Fact-checked by: Quotezone Editorial Team
This content follows our Editorial Guidelines
Last Updated: June 2026