What are the prerequisites before a single call goes out?
Three things need to be in place before your team picks up the phone. Skip any one of them and you are either wasting dials or risking an Information Commissioner's Office (ICO) enforcement action.
1. Accurate direct-dial data
The single biggest driver of calling efficiency is number quality. A list of 500 direct-dial numbers for Operations Directors in the East Midlands manufacturing sector will outperform a list of 2,000 switchboard numbers at the same firms. Switchboard calls eat time on hold, require gatekeeper navigation every attempt, and frequently do not result in a transfer at all. Connect rates on verified direct-dial lists typically run 20% to 35%; switchboard-only lists commonly deliver 6% to 12%.
For B2B contacts sourced from publicly available information (Companies House filings, corporate websites, industry directories), the appropriate lawful basis for processing under UK GDPR is legitimate interests under Article 6(1)(f). Before using any such list, the buying organisation should complete a Legitimate Interests Assessment (LIA) to confirm that the campaign purpose is proportionate and that the contact's reasonable expectations are not overridden. See also our guide to C-suite contact data in the UK for considerations specific to senior decision-makers.
2. TPS and CTPS suppression
The Privacy and Electronic Communications Regulations (PECR) prohibit calling any number registered on the Telephone Preference Service without the subscriber's specific prior consent. The CTPS covers corporate lines registered by organisations. Both registers must be washed against your dial list before any outbound campaign begins, and the wash should be refreshed at least every 28 days if you are running an ongoing programme. The ICO has issued fines exceeding £150,000 to organisations for persistent PECR breaches on business lists, so this is not a box-ticking formality. For a full breakdown of how TPS and CTPS interact with B2B campaigns, the forthcoming UK telemarketing TPS and CTPS rules guide covers the detail.
3. A completed Legitimate Interests Assessment
The LIA documents the three-part test under UK GDPR: the legitimate purpose test (what is the business reason?), the necessity test (is calling necessary for that purpose, or would email suffice?), and the balancing test (do the contact's interests override yours?). For most B2B prospecting campaigns targeting named corporate contacts at relevant organisations, the LIA will support the activity. Sole traders and individual partners at small firms require more careful assessment because they retain consumer-equivalent rights under PECR. Keep the completed LIA on file; it is a key document if you ever receive a DSAR or a regulatory query.
How should you structure your calling cadence?
Calling cadence is the pattern of dial attempts per contact over the campaign period. Two extremes both fail: call once and you miss the bulk of reachable people; call every day at 9 a.m. for two weeks and you generate complaints.
The target range is 3 to 7 attempts per contact. Three is a sensible floor for most B2B campaigns. A prospect might genuinely be travelling, in back-to-back meetings, or simply cautious about unknown numbers on any single day. Seven is roughly where the marginal return on each additional dial drops below the cost of the call in most sectors. Some high-value accounts (C-suite targets at enterprise companies, say) justify pushing to nine or ten attempts because the deal size warrants the effort, but that should be an explicit, deliberate decision rather than the default cadence.
Time-of-day patterns
Spread your attempts across three distinct time windows. Research from UK calling teams consistently shows that Tuesday to Thursday between 10 a.m. and 12 p.m. and between 2 p.m. and 4 p.m. deliver the highest answer rates for most B2B roles. Monday mornings and Friday afternoons are the weakest windows: decision-makers are either clearing the inbox from the weekend or winding down for it. Early morning calls (before 8:30 a.m.) are technically permitted but rarely answered at the decision-maker level and can feel intrusive.
Within a six-attempt cadence, a practical pattern looks like this: attempt 1 on a Tuesday mid-morning, attempt 2 on a Wednesday afternoon, attempt 3 the following Monday morning (deliberately breaking the pattern), attempt 4 on a Thursday mid-morning with a voicemail left, attempt 5 the following Tuesday afternoon, and attempt 6 the week after at a different time. This kind of variation catches people at genuinely different points in their working week rather than catching the same unavailable slot repeatedly.
Voicemail strategy
Leave a voicemail on attempt 3 or 4, not on attempt 1. Leaving one immediately tells the prospect what you want before you have had a conversation, which removes any curiosity they might have had. When you do leave a voicemail, keep it to 20 to 25 seconds. State your name, your company, and a single sentence about why you are calling (the relevance hook, not the pitch), then ask them to call back or tell them you will try again on a specific day. Avoid "Just calling to check in" or "Touching base" -- these phrases communicate nothing and get deleted immediately. A voicemail that says "I'm calling because we work with several [sector] firms on reducing [specific problem] and I wanted to see if it was relevant to you" gives the prospect a reason to decide whether to engage.
How do you get past the gatekeeper?
In a world of good direct-dial data, gatekeepers are less of a factor than they were ten years ago. But switchboard calls and shared reception numbers still exist, particularly in larger organisations. The principles for navigating them are consistent across most sectors.
Be direct and confident about who you are asking for and why. Vague requests ("I'd like to speak to someone in marketing") trigger suspicion; specific ones ("Could you put me through to Sarah Ellis in the Operations team?") signal a pre-existing relationship or at least a prepared caller. If the gatekeeper asks what it is regarding, answer honestly but briefly: "I'm calling about a data project we're working on with similar firms in your sector." Lying about the purpose of the call is a PECR risk and, frankly, an ethical problem.
When the target is not available, ask for the direct line or a callback time. Many gatekeepers will offer one if you are professional and non-pushy. Do not ask the gatekeeper to pass on a sales message; that rarely converts.
What does an effective B2B cold-call script look like?
The structure that works in the UK B2B market has four components, in this order: identification, relevance hook, qualifying question, and next-step ask. The whole opener should take 30 to 45 seconds before the prospect is saying anything substantive.
Identification (5 seconds)
State your full name and company name. Under PECR this is a legal requirement, but it also sets the caller up as professional rather than evasive. "Hi, this is James from SortedIQ" is fine. "Hi, it's James, just calling quickly" is not.
Relevance hook (10 to 15 seconds)
State a specific, recognisable problem or context that connects you to their world. The weaker version: "We help businesses with their data." The stronger version: "We work with IT resellers targeting mid-market finance firms in the UK, and a lot of them are finding that their CRM contact data has gone stale since the pandemic -- roughly 30% decay in two years for senior roles." The second version shows you understand their sector and names a real problem. Even if the prospect's situation is different, they recognise the specificity and their guard drops.
In our experience, callers who open with a sector-specific observation rather than a product description get 40% to 60% further into the conversation before being cut off.
Qualifying question (10 seconds)
Before attempting to book anything, ask one question that confirms relevance. "Is that something your team is currently dealing with?" or "Are you still responsible for the data side of your prospecting at [Company]?" A yes means the call proceeds naturally. A no, or a redirect to a different person, saves everyone time. Pitching at someone who has just told you the problem does not apply to them is a waste of a call.
Next-step ask
One ask, clearly stated, at the natural close. A 20-minute call, a meeting, agreement to receive a one-page summary. Do not offer three options ("we could do a call, or send information, or I could get someone else to follow up"). Decision fatigue kills momentum. Pick the next step that makes most sense for the relationship and ask for it.
Calling KPI benchmarks: what does good look like?
The table below gives realistic benchmark ranges for a well-run UK B2B telemarketing programme on a verified direct-dial list. Numbers at the low end of each range indicate a problem worth investigating.
| KPI | Strong performance | Acceptable range | Red flag | Likely cause of red flag |
|---|---|---|---|---|
| Dials per hour (manual) | 18 to 25 | 12 to 18 | Below 10 | Poor list organisation, excessive admin, caller avoiding the phone |
| Connect rate (live person reached) | 28% to 35% | 20% to 28% | Below 15% | High proportion of switchboard numbers, stale data |
| Conversation rate (target decision-maker engaged) | 60% to 75% of connects | 45% to 60% | Below 35% | Wrong seniority on list, poor gatekeeper handling |
| Qualified interest rate | 20% to 35% of conversations | 12% to 20% | Below 8% | Weak relevance hook, wrong sector or job function targeting |
| Connect-to-meeting conversion | 8% to 15% | 5% to 8% | Below 3% | Script too product-heavy, no qualifying question, list quality issues |
| Meetings held vs booked | 75% to 90% | 60% to 75% | Below 50% | No confirmation process, wrong contact level booked |
A connect-to-meeting conversion of 1% to 3% is often treated as normal by teams that have not benchmarked properly. It rarely is. At that level, either the list is not matching the offer (a Finance Director list being used to sell a product that procurement actually buys), the script is pitching features rather than problems, or the data is so stale that many connects are people who have left the role.
Call recording and compliance
Recording outbound sales calls is standard practice for coaching, quality assurance, and dispute resolution. Under UK GDPR, recording constitutes processing of personal data (the voice is identifiable) and requires its own lawful basis. For most B2B outbound operations, legitimate interests works here too, but the LIA must include a proportionality assessment specific to recording (not just to calling).
Practically, you need three things in place. First, a fair-processing notice: either an automated message at call connection or a verbal statement by the caller. Second, a documented retention policy: most calling teams keep recordings for 90 days to 12 months. The shorter end is usually sufficient unless the call resulted in a signed contract. Third, a process for data subject access requests (DSARs): if a contact requests their call recording, you have one month to produce it. That means your CRM or dialler must be able to retrieve recordings by contact identifier, not just by date.
Sole trader and small partnership calls
PECR treats sole traders and individual partners in the same way as consumers for the purposes of TPS registration. A sole trader can register their business number on the individual TPS (not CTPS), which means your corporate CTPS wash alone does not cover them. If your list includes micro-businesses where the owner is the contact, check against both registers. The ICO's own guidance (available at ico.org.uk) is the authoritative source on this distinction.
What do you do when someone asks to be removed from your list?
Stop calling. Immediately. Add the number to your internal suppression file. Under UK GDPR, an objection to direct marketing under Article 21(2) is an absolute right: there is no balancing test, no business justification that overrides it. The suppression file must persist beyond the campaign; if you buy a new list in six months, you need to wash it against your own suppressions before dialling.