Ask six sales leaders to define an SDR and a BDR and you'll get four different answers. The titles are used interchangeably across job boards, the definitions shift depending on who you ask, and most existing guides are written for the US market. This one isn't. Here's exactly what each role does in a UK B2B context, how they differ, and — most importantly — how to decide which one your business actually needs.
The short version: An SDR (Sales Development Representative) typically qualifies inbound leads. A BDR (Business Development Representative) typically generates outbound pipeline from scratch. The distinction matters because they require different skills, different management, and different compensation structures. Hiring the wrong one wastes money and time. Here's how to get it right.
The SDR/BDR confusion is real and widespread — and it's not your fault. Some companies use "SDR" to mean outbound. Others use "BDR" for both. HubSpot calls everyone an SDR. Salesforce uses BDR for their outbound function. Some UK start-ups just call everyone "Sales Development" and move on.
The result is that job boards in the UK are full of SDR and BDR roles with completely different day-to-day responsibilities — and hiring managers often brief agencies for one when they actually need the other. This mismatch leads to bad hires, frustration on both sides, and missed pipeline targets.
For the purposes of this guide, we're going to use the most commonly accepted definitions in UK B2B sales — and we'll tell you where the lines blur so you can think clearly about what your business actually needs.
An SDR — Sales Development Representative — is primarily responsible for qualifying inbound leads. These are prospects who have already shown interest in your product or service: they've requested a demo, downloaded content, attended a webinar, or submitted a contact form. The SDR's job is to assess whether that interest is genuine, whether the prospect fits your ICP (Ideal Customer Profile), and whether they're ready to speak to an Account Executive.
SDRs are not responsible for closing deals. They sit at the top of the funnel, between marketing and sales. Their core metric is typically Sales Qualified Leads (SQLs) — qualified prospects handed to AEs who have a realistic chance of converting.
Works inbound demand generated by your marketing team. Responds quickly to demo requests, content downloads, and form submissions.
Creates pipeline from scratch by proactively targeting companies and contacts who haven't yet engaged with your business.
| Factor | SDR | BDR |
|---|---|---|
| Primary motion | Inbound qualification | Outbound prospecting |
| Lead source | Marketing-generated (warm) | Self-sourced (cold) |
| Key skill | Speed, qualification, process | Research, resilience, outreach |
| Typical lead volume | High volume, lower complexity | Lower volume, higher complexity |
| Difficulty to hire | More structured, easier to hire for | Harder — outbound skill is rarer |
| Key metric | SQLs / meetings booked from inbound | Pipeline generated / net-new meetings |
| Reports to | Marketing or Sales | Sales |
| UK base salary 2026 | £28,000 – £46,000 | £32,000 – £52,000 |
| UK OTE 2026 | £42,000 – £70,000 | £50,000 – £85,000 |
Why BDRs earn more: Outbound is harder. Cold prospecting requires more skill, more resilience, and more creativity than qualifying warm inbound leads. If you're paying your BDR the same as your SDR, you're either underpaying your BDR or overpaying your SDR. See our UK Sales Salary Guide 2026 for full benchmarks at every level.
This is the question most hiring managers get wrong — and getting it wrong costs you a hire, three to six months of ramp time, and a significant amount of frustration on both sides.
Our advice for early-stage UK businesses: Most businesses under £5M ARR don't need to separate these functions. Hire one strong hybrid — someone who can handle inbound qualification AND do outbound prospecting. Once you hit 8–10 salespeople, specialise. Before that, the overhead of managing two distinct functions rarely justifies the split.
This is extremely common. A business has some inbound traction, hires a BDR expecting them to "do both," and then wonders why conversion rates are low. A BDR's core skill is building pipeline from nothing — not nurturing warm inbound leads. If you have genuine inbound volume, an SDR will outperform a BDR on that motion every time.
UK data from RepVue's 2026 benchmarks shows only 66% of SDRs consistently hit quota. If your whole team is missing, the quota is broken — not the people. A well-designed SDR quota should be achievable by 70–80% of the team. If it's not, you're not measuring performance — you're measuring luck.
Below-market base salary for an SDR or BDR means you attract below-market candidates. The better ones have options — they'll take the role that pays properly. A £3–5k saving on base salary that results in a mediocre hire who leaves after 9 months costs far more than the saving. See our salary guide for what the UK market actually looks like in 2026.
An SDR or BDR with no proper onboarding will underperform for their first six months regardless of how good they are. A structured 90-day ramp — product knowledge, messaging frameworks, tool setup, call shadowing — cuts time-to-productivity significantly and dramatically reduces early attrition. We covered this in detail in our guide to why sales hires fail.
Confident, talkative candidates can mask thin track records in SDR and BDR interviews. The best interviews focus on evidence: what was your daily call volume? What sequences did you use? What was your meeting-to-show rate? What's the best cold email you've ever written — and why did it work? Generic enthusiasm is not a predictor of BDR performance. Activity discipline and resilience under rejection are.
Compensation for both roles has continued to rise in 2026, driven by competition for strong talent and the increasing complexity of outbound outreach. Here's a quick summary — see our full UK Sales Salary Guide 2026 for complete role-by-role data.
| Role | Base Salary | OTE | Notes |
|---|---|---|---|
| Junior SDR (0–1 yr) | £28,000 – £36,000 | £42,000 – £52,000 | Often in-office, graduate entry |
| SDR (1–3 yrs) | £35,000 – £46,000 | £52,000 – £70,000 | Tech/SaaS at upper end |
| Senior SDR | £46,000 – £58,000 | £68,000 – £85,000 | Team lead responsibility added |
| BDR (1–3 yrs) | £35,000 – £50,000 | £55,000 – £80,000 | Outbound premium applies |
| Senior BDR (3–5 yrs) | £48,000 – £62,000 | £75,000 – £100,000 | Enterprise/complex outbound |
The SDR vs BDR distinction matters more than most hiring managers realise — not because the titles are important, but because the underlying sales motion determines the skills, personality, management style, and compensation structure you need to get right. Hiring for the wrong motion is one of the most common and preventable causes of a failed sales hire in the UK market.
If you're unsure which hire is right for your business stage and growth strategy, the honest answer is usually: talk to someone who knows the market. We work with UK businesses every day on exactly this decision — and we'll tell you what we actually think, not what you want to hear.
We'll help you define the right brief, set a realistic compensation structure, and find candidates who can actually do the job — not just talk about it.
Talk to Psixty UK ↗