Updated : November 13, 2026I watched a rep scroll through a fresh UK call list last month and skip every number starting 01 or 02.
I asked why, and he said nobody picks up office phones anymore. I didn’t argue. I had made the same call myself more than once.
Then I looked at what actually happened when those numbers got dialed.
The landlines he skipped were more likely to turn into real conversations than the mobiles he kept.
Here’s what the numbers say about the lines most teams have quietly stopped dialing.
Most Numbers on UK Call Lists Are Now Mobiles
Look at almost any outbound list built for the UK today, and it’s mostly mobiles. Our data shows the same thing.
In a sample of 4,947 UK calls made, 4,231 (85.5%) went to mobiles and 591 (11.9%) went to geographic landlines. The rest went to other UK number types.
So landlines are already a small part of the list, and they’re the easiest part to cut. Whether you should cut them is a separate question.
How is a UK Landline Call Different From a Mobile Call?
A UK geographic landline is a number starting 01 or 02 that is tied to a place, often an office. A UK mobile starts with 07 and follows a person wherever they are.
Because landlines are more likely to ring on a desk during working hours, that may help explain why calls to them run longer, though the data doesn’t show this directly.
In a UK Sample, Landline Calls Became Conversations More Often
We counted a call as a conversation when a person answered, and the call lasted at least 30 seconds. On that measure, landlines did much better.
| Metric (UK) | Geographic Landline (n=591) | Mobile (n=4,231) |
|---|---|---|
Put simply: in a sample of 4,822 UK calls, 31.1% of calls to geographic landlines became conversations of 30 seconds or more, against 18.4% of calls to mobiles.
The 60-second gap is even wider. Landline calls were about twice as likely to last a full minute. “Longer” here means more calls passed the 30s and 60s marks. It doesn’t mean the average call lasted longer.
Mobile Calls Went to Voicemail About Twice as Often
Part of the reason is what’s on the other end of the line.
In the same sample, 24.4% of calls to mobiles were picked up by a machine (voicemail), against 11.3% of calls to landlines.
So the trade-off isn’t about who answers. It’s about whether you reach a person or a recording. A mobile can be in someone’s pocket, on silent, or sent straight to voicemail. A desk phone either rings or it doesn’t.
Pickup Rates for Landlines and Mobiles Were Close
If you only track pickups, you’d miss most of this.
Human connect rates were 51.3% (±4.0) for landlines and 47.3% (±1.5) for mobiles. The margins overlap, so we can’t say landlines get picked up more often. The difference shows up in what happens after someone answers.
Some caveats before you take this into a planning meeting:
- It’s a UK finding only. In India, the pattern reverses: landline and other numbers connected at 26.4% (n=606) against 37.0% for mobiles (n=4,415).
- Other UK number types are an open question. UK “other” numbers (+443 and +448 ranges) connected at 18.4%, but with only 125 calls, that’s an early signal at most.
- We can’t tell you these were B2B calls. The data has no field for business or consumer. Office lines are a reasonable guess for many 01/02 numbers, but it’s still a guess.
Why You Should Track Line Type in Your Call List
Most CRMs store a phone number as just a phone number. If you can’t separate 01/02 numbers from 07 numbers, you can’t see any of the gaps above in your own data.
Adding a line-type field takes one step. Read the prefix when a number is imported, tag it as landline, mobile or other, and report conversation rates for each group. After a few weeks, you’ll know whether your landlines are worth keeping.
How you show up on the other end matters too. Teams that call UK offices often run a United Kingdom phone number, such as a local geographic line or a London virtual phone number, so their caller ID looks familiar to the people they call.
Providers such as CallHippo offer these alongside a UK toll-free number (0800), 0330 numbers, and 07 mobile numbers. You can manage all of them from one dashboard, with call recording and analytics that make tracking line type easier.
How Many UK Landlines Did You Drop From Your Last Call List?
Pull up your last UK list and count the 01 and 02 numbers that were removed before anyone dialed them.
Then ask who made that decision and what it was based on. If it was based on pickup rates, or on a feeling that office phones are dead, it was based on the wrong measure.
That’s probably the most useful number you’ll find this week.
Conclusion
In this UK sample, landlines made up a small share of call lists but turned into conversations far more often than mobiles. Pickup rates were close, so the difference comes after the call is answered. Split your lists by line type, and measure conversations rather than pickups. Your landlines may be the most productive part of your list.
Published : November 12, 2026
Ankit Dudhwewala is the CEO and Co-founder of CallHippo, a leading virtual phone system designed to optimize business communication through AI and automation. With a strong background in marketing and business administration, Ankit has successfully built and bootstrapped CallHippo. Ankit’s leadership and innovative approach have made him a prominent figure in the SaaS industry, driving growth and shaping the future of business communication solutions.
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