Tools and providers
Part of Guide to call tracking for UK local services and GDPR
Guide to call tracking for UK local services and GDPR
Call tracking for UK local services: how virtual numbers, Ofcom numbering rules and UK GDPR consent for call recording affect phone lead attribution.
What to take away
- Call tracking assigns a separate UK number to each channel, so you can see which ad, page or listing produced a call.
- Ofcom sets UK number ranges; your provider must allocate a number that matches how you advertise its cost.
- Recording calls needs a lawful basis under the UK GDPR, a clear caller notice and a set retention period.
- For phone-heavy trades, call tracking is a measurement layer. It sits alongside a complete Google Business Profile and paid search.
How call tracking attributes phone leads for local services
Call tracking for UK local services usually works through dynamic number insertion. A script swaps the number on your website for a visitor from a specific source. When the phone rings, the platform logs the source, page, time and call length. For a plumber or electrician, that turns a raw call into a campaign record.
How a tracked call is attributed
- Visitor lands from a specific source
- Script swaps the website number
- Caller dials the tracked number
- Platform logs source, page, time, length
- Call becomes a campaign record
If you already compare Local Services Ads with Google Ads, call tracking fills a gap. Neither platform always reports the phone call against the job value. Track calls by channel, then match them to quotes and invoices.
Missed calls matter too. A tracked number can route to a mobile or an answering service. If no one picks up, the record still shows a lost lead.
UK number formats and Ofcom rules for virtual numbers
Ofcom manages the UK telephone numbering plan. It sets the ranges that providers can allocate: 01 and 02 geographic, 03 UK-wide, 0800 freephone, 084 and 087 service, 09 premium, 07 mobile.
For the rules behind number allocation and use, consult Ofcom's National Telephone Numbering Plan and General Condition C6, “Allocation, adoption and use of telephone numbers”.
Virtual numbers are ordinary UK numbers hosted in the cloud. They are not tied to a physical exchange line. A Leeds plumbing firm can advertise a local 0113 number while its office sits in Bradford. Ofcom's rules require the number to be used as advertised and the call cost to be clear.
Before you buy, ask three questions.
- Which UK number range will you allocate?
- What call routing, reporting and recording controls are included?
- Can I port the number if I change provider?
UK number ranges compared
Number range
- 01 or 02
- Local area
- 03
- UK-wide
- 0800
- Freephone
- 084 or 087
- Service line
- 09
- Premium
Typical use
- 01 or 02
- Geographic call rate
- 03
- Usually same as geographic
- 0800
- You pay inbound minutes
- 084 or 087
- Caller pays service charge
- 09
- Higher caller charge
Cost note
- 01 or 02
- 03
- 0800
- 084 or 087
- 09
GDPR consent for recording calls and using call data
Call recording is personal data processing. Under the UK GDPR you need a lawful basis before you record. Consent is one option, but legitimate interests can cover quality monitoring or dispute resolution if you balance the caller's rights. The ICO's guide to the UK GDPR explains lawful bases and individual rights.
PECR (the Privacy and Electronic Communications Regulations 2003) also matters. If a dynamic number insertion script stores information on, or accesses information from, a visitor's device through cookies or similar technologies, obtain consent before using it unless it is strictly necessary; check how the specific script works. The ICO's Cookies and similar technologies guidance explains the cookie rules.
The Data Protection Act 2018 sets out exemptions and enforcement. Your privacy notice should name the call tracking provider and explain why calls are recorded.
If your business is the data controller, check the ICO's data protection fee self-assessment: controllers must pay the fee unless exempt. The requirement and exemptions are set out in the Data Protection (Charges and Information) Regulations 2018.
Use a short announcement at the start of a recorded call. If you make outbound marketing calls, the ICO's Direct marketing guidance covers consent and screening.
Set a retention period and delete recordings when the purpose ends, unless you need them for a legal claim.
Choosing call tracking software for UK local services
Compare providers on number range, call routing, recording controls and reporting. Examples to research include CallRail, Mediahawk, Infinity and ResponseTap; verify which UK numbers, integrations and features each currently supports. A platform should pass the lead source into your CRM so you can connect calls with outcomes.
Check contract length and number portability. If you leave, can you take the number? A tracked number may appear in ads and vehicles, so losing it breaks attribution.
Call tracking also feeds review generation for UK tradespeople: a completed job can trigger a request while the call record proves the source.
Pick one primary conversion, such as a booked quote. Compare call volume against quote value.
Common questions
Do I need consent to record calls in the UK?
Not always. Consent is one lawful basis under the UK GDPR, but legitimate interests can apply if you assess them properly and tell callers. An announcement at the start of the call and a clear privacy notice are the practical minimum.
Are virtual UK numbers legal for local services?
Yes, provided the provider follows Ofcom's numbering rules. You must advertise the call cost clearly and use the number as described. Geographic 01 and 02 numbers can be hosted virtually.
Can call tracking work with Google Ads?
Yes. Third-party call tracking uses dynamic number insertion on your website and can show which campaign or keyword led to a call. Google Ads has its own call reporting, but it may not cover calls from a Google Business Profile or a leaflet.
How long should we keep call recordings?
There is no single retention period in the UK GDPR. Keep recordings only as long as needed for the purpose you told the caller about. Write down the period and review it each year.
