Why does coverage vary so much between sectors?
The depth of B2B data in any given sector is not random. Three structural factors drive the differences: the size distribution of businesses in that sector, the regulatory disclosure burden those businesses carry, and the volume of publicly available corporate signals they generate through normal trading activity.
A firm authorised by the Financial Conduct Authority (FCA) must appear on the public Financial Services Register. A law firm must register with the Solicitors Regulation Authority (SRA). Both registrations include named individuals, firm addresses, and regulated activities. That disclosure produces a dense, structured dataset that can be verified against Companies House records, corporate websites, and published accounts. A building contractor with three employees and no website leaves almost none of those traces.
Company size is the single biggest predictor of data depth within any sector. Coverage at 250 or more employees is reliably strong across every industry. Below 10 employees, contact data thins out sharply, and the variation between sectors is determined mainly by how many micro-businesses each sector contains. Construction, agriculture, and hospitality are each more than 90% micro-businesses by entity count. That is why headline company counts in these sectors can look impressive while usable named-contact data remains thin.
The third driver is public corporate activity: press releases, job postings on company websites, published accounts, regulatory filings, and industry directory listings. Technology firms issue press releases, post job descriptions naming their engineering and marketing leadership, and appear in analyst databases. A family-run hotel group or a sole-trader joiner does none of this. The asymmetry compounds with size: large technology firms generate more public signals than small ones, and the sector skews larger than hospitality or agriculture.
The sectors with deepest UK B2B coverage
Financial services
Financial services sits at the top of the coverage table for every major metric: company count, named director count, and direct contact availability. The FCA's Financial Services Register is publicly searchable and lists authorised firms alongside approved persons (named individuals cleared to perform regulated activities). As of 2025, the register contains more than 50,000 firms. That public infrastructure, combined with the fact that financial services skews towards medium and large organisations, means a data provider sourcing from public records has an unusually rich foundation.
FCA-authorised businesses also file detailed accounts at Companies House, maintain public websites with named leadership, and issue press releases with individual attribution. Insurers, IFAs, fund managers, mortgage brokers, and wealth managers are all well-covered. The gap is at the very small end: sole-trader IFAs and small credit brokers may appear on the FCA register but have no further public-facing contact trail beyond a registered address.
Professional services: legal, accounting, and consulting
Like financial services, the legal sector benefits from mandatory regulatory registration. Every authorised law firm in England and Wales appears on the SRA register, which includes the firm's name, address, and regulated status. The Institute of Chartered Accountants in England and Wales (ICAEW) and other accountancy bodies publish similar public directories. Management consultants sit outside regulated registration requirements, but larger consultancies maintain detailed public profiles through their corporate websites and published case studies.
The result is strong coverage for law firms with more than five fee-earners, chartered accountancy practices of any meaningful size, and management consultancies with a public market presence. Named partners, directors, and C-suite contacts at these firms are well-represented in compiled B2B files sourced from publicly available information.
Manufacturing
UK manufacturing (SIC 2007 Division C, codes 10 to 33) covers everything from food processing to aerospace components. It skews towards the mid-market in ways that favour data coverage: according to ONS Business Population Estimates, roughly 40% of manufacturing employment sits in firms with 50 to 249 employees, a segment large enough to maintain corporate websites, file detailed accounts, and appear in trade directories, but small enough that individual decision-makers are named rather than buried inside large procurement teams.
Operational Directors, Production Managers, and Procurement leads at UK manufacturers are among the most reliably covered B2B contacts by job function and seniority. Trade association membership (Make UK, the Confederation of British Metalforming) and industry press provide an additional layer of public signal that enriches coverage beyond what Companies House alone would supply.
Technology
UK technology and software companies (broadly SIC codes 62000 to 63990, plus parts of Division J) generate a high volume of public-facing signals relative to their employee count. Product launches, funding announcements, job postings, and conference appearances produce named contacts across marketing, sales, engineering, and product functions. SaaS firms in particular list their leadership teams on public websites with unusual consistency.
The caveat is volatility. Tech firms have above-average staff turnover and frequent restructuring, which means B2B contact data in this sector decays faster than in, say, professional services or manufacturing. Annual refreshes are more important here than in slower-moving sectors. In our experience, decay rates for senior B2B contacts in software are around 25 to 30% per year, roughly double the rate in legal or accountancy.
The sectors with weakest UK B2B coverage
Construction
Construction presents a specific structural problem. The UK has more than 340,000 registered construction businesses, making it one of the largest sectors by company count. But more than 95% of those companies have fewer than 10 employees, and a significant share are sole traders working through a limited company with no employees at all. These micro-entities have a Companies House registration and nothing else: no website, no press coverage, no named contact beyond the single registered director.
This means a data provider can build a high company count in construction while delivering very little at the named-contact level. For campaigns targeting main contractors, housebuilders, or engineering firms with 50 or more staff, coverage is reasonable. For campaigns targeting groundworkers, plasterers, or joinery sub-contractors, expect thin data regardless of the claimed file size.
Hospitality and food service
Hotels, restaurants, pubs, and catering businesses face the same micro-business problem as construction. The sector also has high churn: the failure rate for UK hospitality businesses means that even a recently compiled file may contain a significant proportion of businesses that have closed or changed ownership. Named contact data for owner-operators of independent restaurants or pub tenancies is particularly unreliable.
Larger hospitality groups (pub chains, hotel groups, contract catering firms) are well-covered at the corporate level, but these represent a small share of the total entity count. If your campaign targets hospitality, set realistic expectations about the named-contact match rate and prioritise the 10-plus employee segment.
Agriculture and farming
Agriculture occupies a distinct position. The sector has a large number of registered businesses, but the majority are sole traders or family partnerships with no meaningful corporate web presence. Named-contact data at the farm level is sparse. The exception is the agri-business supply chain (agricultural merchants, machinery dealers, feed manufacturers, crop protection distributors) which has reasonable coverage at the company level.
Special cases: public sector, NHS, and education
Government bodies, NHS trusts, and educational institutions are legally separate from commercial B2B data and should be treated as distinct data domains. They are not Companies House entities and they do not appear in commercial B2B files compiled from corporate directories and public filings in the same way.
NHS procurement contacts are published through the NHS Shared Business Services portal and individual Trust websites. Council procurement leads appear on the Contracts Finder platform run by the Cabinet Office and on local authority procurement portals. School business managers, headteachers, and bursar contacts are listed by the Department for Education through Get Information About Schools (GIAS) and by academy trust websites.
Each of these requires a specialist sourcing approach. Coverage is available, but the data structure differs fundamentally from commercial B2B. Job titles do not map neatly onto private-sector seniority hierarchies, procurement processes follow public contract regulations rather than commercial decision-making patterns, and contact turnover in some public-sector roles is slower than in corporate equivalents, which can work in your favour for data longevity.
Sector coverage depth: a summary table
The table below rates UK B2B data coverage across six dimensions. "Company record" refers to the availability of a basic firmographic record; "named contact" refers to the availability of an identified individual with a job title; "direct contact" refers to a direct-dial number or business email rather than a switchboard or info@ address.
| Sector | Company record depth | Named contact depth | Direct contact (email/direct dial) | Key driver | Main weakness |
|---|---|---|---|---|---|
| Financial services | Very high | High | High | FCA register, detailed Companies House filings | Sole-trader IFAs and small credit brokers |
| Legal services | Very high | High | High | SRA register, named-partner profiles on firm websites | Legal aid sole practitioners with no web presence |
| Accounting & audit | High | High | High | ICAEW/ACCA directories, corporate websites | Small bookkeeping sole traders |
| Technology & software | High | High | Medium-high | Press activity, job postings, leadership pages | High decay rate (25-30%/year) |
| Manufacturing | High | High (50+ employees) | Medium | Trade directories, make UK membership, filings | Sub-10-employee fabricators |
| Management consulting | Medium-high | Medium-high | Medium | Corporate websites, case studies, conference presence | Freelance sole-trader consultants |
| Wholesale & distribution | Medium | Medium | Medium | Trade directory listings, supplier catalogues | Small owner-managed distributors |
| Retail (head office) | Medium | Medium | Low-medium | Corporate press releases, named buyer contacts | Single-site independents with no HQ function |
| Healthcare (private) | Medium | Medium | Medium | CQC register, named clinical and operational leads | GP practices, small dental/optician partnerships |
| Education (independent) | Medium | Medium | Low-medium | GIAS register, academy trust websites | High turnover of school leadership contacts |
| Construction | Medium (high company count) | Low | Low | Companies House registration is near-universal | 95%+ are micro-businesses with no public profile |
| Hospitality & food service | Low-medium | Low | Low | Few; some trade press coverage for larger groups | High churn, owner-operator dominated |
| Agriculture & farming | Low | Very low | Very low | Land registry and rural payments data (limited use) | No corporate web presence; family partnerships |
| NHS / public sector | High (specialist sourcing) | Medium (specialist sourcing) | Medium (specialist sourcing) | NHS SBS, Contracts Finder, GIAS, ICB directories | Different data structure; not in commercial B2B files |
How regulated sectors differ: FCA, CQC, and SRA data
Three regulatory registers deserve specific attention because they each create a publicly maintained, structured list of authorised businesses and named individuals that feeds directly into B2B data quality.
The FCA Financial Services Register contains firm-level and individual-level data on every entity authorised to conduct financial services activity in the UK. It is updated continuously and is searchable by firm name, reference number, and individual name. For financial services prospecting, it provides a reliable verification layer: any B2B file claiming to cover this sector should be verifiable against it.
The Care Quality Commission (CQC) register covers registered health and social care providers in England, including private hospitals, care homes, GP practices, dental surgeries, and physiotherapy clinics. Named registered managers are listed publicly. This makes private healthcare a better-covered sector than its position in the main table might suggest, provided you are targeting operational leaders (Registered Managers, Practice Managers, Clinical Directors) rather than clinical staff.
The SRA register covers more than 10,000 regulated law firms and lists individuals with authorised roles. Combined with the Law Society's Find a Solicitor directory, this gives legal sector data an unusual degree of verifiability. For campaigns targeting Partners, Solicitors, or Head of Legal in UK law firms, the data quality floor is higher than in most sectors because the register provides a publicly maintained, independently updated cross-reference.
How to verify sector coverage before you buy
A data provider's headline claim ("we have 500,000 UK B2B records") tells you almost nothing about whether they can actually deliver the sector and seniority combination you need. The only reliable approach is a structured pre-purchase check.
Start with a count by UK SIC 2007 code. If you are targeting HR Directors in professional services firms, ask for the count at SIC 7010 to 7490 (broadly professional and management activities) filtered to HR/People function at Director level. The count should feel plausible given ONS Business Population Estimates for that sector. A supplier claiming 20,000 HR Directors in that SIC range for the UK should be asked to substantiate it; the real universe is closer to 3,000 to 5,000.
Then request a sample of 20 to 50 records. Look for three things: named individuals (not just company records), direct contact details (direct-dial numbers or personal-name email addresses, not info@ or switchboard), and job titles that match your target seniority. Run five or ten records through a LinkedIn search to check whether the people still hold those roles. A sample with a 70% or higher match rate on LinkedIn verification is a reasonable baseline for a mid-market B2B file.
For a fuller framework on evaluating providers, see our guide on how to choose a B2B data provider in the UK. For understanding which SIC codes map to which industries, the UK SIC 2007 codes explained guide covers the full five-digit structure with examples by sector.
A note on job function targeting within sectors
Coverage depth varies not just by sector but by the combination of sector and job function. Financial services has deep coverage for Finance Directors and CFOs, but patchy coverage for IT leadership below CTO level because the sector's regulatory registers do not capture technology roles specifically. Manufacturing has strong coverage for Operations and Production roles but weaker coverage for Marketing (many manufacturers have no marketing function at all). Matching sector depth to the specific function you are targeting is the correct analysis; a broad "sector coverage" rating is only a starting point. For a detailed breakdown of how function and seniority interact across sectors, see our article on job function and seniority targeting for B2B campaigns.
SortedIQ's UK B2B file is compiled under legitimate interests from publicly available sources including Companies House filings, corporate websites, and public industry directories. Before purchasing any segment, we provide a free count by SIC code, seniority, and job function so you can validate the available universe before committing to a purchase.