Build a Verified UK eCommerce Prospect List

I need a clean, verified prospect list of UK-based eCommerce brands and their owners/decision-makers. This is for B2B outreach, so accuracy matters far more than volume — every email must be deliverable and every contact must genuinely hold a decision-making role. I'm looking for 5,000 verified rows to start. If quality is good, this becomes ongoing work. Columns required (exact order) Business — company/brand name URL — homepage (https://) First Name — of the decision-maker Last Name Job Role — must be one of the roles listed below Email (Verified) — personal company email of that person not a generic inbox Location — must be UK-based (city / region) Colleague Names — 1–3 other named team members with their role (e.g. "Sarah Jones – Marketing Manager"). Pulled from LinkedIn / the brand's About or team page. Source — link to where you found the name/role (LinkedIn profile or page URL) so I can spot-check Who to include Geography: UK-based businesses only Platform: preferably Shopify - other platforms acceptable if the brand is a strong fit Verticals: fashion, jewellery, health & beauty, nutrition/supplements Decision-maker roles (must be one of these): CEO, Owner, Founder, Managing Director Company size I want owner-run independents, not household names or brands big enough to have an in-house ads team. Annual revenue: roughly £200,000 – £4m as a guide. Team size (the enforceable check): roughly 2 – 50 employees. Use this as your main filter, since revenue is hard to confirm. How to gauge size: UK Companies House filings (small-company accounts / employee numbers), LinkedIn employee count, or Store Leads estimates. Reject anything that is a household name, has an obvious internal performance-marketing team, or is clearly a large multi-brand group. If you'd recognise the brand from a TV ad, leave it out. Absolutely exclude CBD Vapes / e-cigarettes Alcohol Marketplaces, pure dropshippers, and huge corporates (I'm after owner-run / independent brands, global brands) Generic/role emails - these do not count Quality requirements (please read) Verify every email with a proper tool and only include addresses that return valid/deliverable. Catch-all results must be flagged in a notes column, not passed off as verified. No duplicates — dedupe by company and by email. Real person, real role — the named contact must actually be the CEO/Owner/Founder/MD. Guessed names will fail my spot-check. Deliver in a Google Sheet (share editable link) or CSV. How to apply Start your reply with the word "BUILDING" so I know you read the brief. Briefly tell me which tools you'll use to (a) find Shopify stores, (b) find the owner's name/role, (c) verify emails. Tell me your realistic daily output of verified rows and your rate. Test first Before any large order, I'll pay for a small test batch of 25 rows to check accuracy. If the test is clean (low bounce, correct roles, no excluded verticals), we scale to the full list and likely ongoing batches.