Four products. One login. One bill.

The operating system
for UK construction.

Site-Lynx runs the site. Work-Lynx runs the people. Cost-Lynx prices the work. Invo-Lynx collects the money. One stack — built by a commercial manager who spent twelve years paying for stitched-together rubbish — at a fraction of the price of the £20-300/seat crowd.

Start with Site-Lynx See the bundle maths
Site-Lynx·Work-Lynx·Cost-Lynx·Invo-Lynx
UK-hosted, UK-built One login across the suite Cancel any time
LYNX.GROUP // STATUS: LIVE
v2026.05 · UK
1,200+
UK regs
preloaded across CDM, RIDDOR, HSE, COSHH
537
rates
2026 UK construction prices, indexed quarterly
29
trades
rate libraries — steelwork, M&E, groundworks, joinery…
49
HR policies
ACAS-compliant, country-aware (UK / US / AU)
£11,868/yr
saved
on a 30-person team vs the old-guard stack
The four products

Each one stands alone. They click in when you add the next.

Same login, same data. Win a tender in Cost-Lynx — the contract sum lands in Invo-Lynx. Clock-in on Site-Lynx — the time hits Work-Lynx timesheets.

Live
Site-Lynx
Run the site.

RAMS, QA, safety audits, permits, snags, plant, gate audits. Fifteen modules in one workstation, preloaded with 1,200+ UK regulatory references.

  • AI-drafted RAMS
  • 15 site modules
  • Watermark-free output on any paid tier
from £12
/mo · scales by team size
Open Site-Lynx
Live
Work-Lynx
Run the people.

GPS clock-in, rotas, timesheets, leave, training, payslips. Every HR module on every plan. Employ AI answers UK employment-law questions on tap.

  • GPS clock-in with geofences
  • 49 UK policies preloaded
  • Employ AI — ACAS · TUPE · SSP
£2.50
base + £1 / employee
Open Work-Lynx
Coming soon
Cost-Lynx
Price the work.

NRM2 bill of quantities, take-off, tender pack, customer quote. 537 UK 2026 rates preloaded across 29 trade packages. Built by a commercial manager.

  • NRM2 BoQ editor
  • 537 UK 2026 rates preloaded
  • Auto hand-off to Invo-Lynx on award
£22
/user/month — all features
Coming soon
Coming soon
Invo-Lynx
Collect the money.

Construction invoicing built around the Construction Act. Pay-Less Notice clock, AfP auto-totals, subcontractor ledger, CIS300 generation, DRC VAT. MTD VAT + bank feeds land through 2026.

  • s.110A Payment Notice + s.111 PLN
  • CIS300 monthly return + statements
  • Subbies invited free
£15
/user/month · 30 days free
Coming soon
The integration nobody else has

One platform, four products, zero retyping.

Other vendors charge for "integrations" between tools they sell you separately. Lynx products share the same database — so the moment something happens in one, it's already true in the others.

EVENT #001 · AUTO-PROPAGATED
Cost-LynxInvo-Lynx
Tender awarded.
Contract sum, retention %, AfP schedule auto-create in Invo-Lynx. Subbie ledger pre-populated from the BoQ.
EVENT #002 · AUTO-PROPAGATED
Work-LynxSite-Lynx
Operative clocks in on site.
GPS evidence lands on the Site-Lynx daily diary. Toolbox-talk attendance auto-marked.
EVENT #003 · AUTO-PROPAGATED
Work-LynxSite-Lynx
New employee added.
CSCS expiry feeds the Site-Lynx induction gate. Training matrix gaps flag against open permits.
EVENT #004 · AUTO-PROPAGATED
Invo-LynxCost-Lynx
AfP certified by the QS.
Certified value posts to Cost-Lynx CVR (when CVR ships). Cashflow forecast updates against project budget.

Some flows ship today, some land as the matching feature does (CVR mid-2026, MTD VAT once HMRC integration is live). All four products already share one database — when a feature ships in one, it lights up in the others.

Do the maths

What you pay them. What you'd pay us.

Public 2026 list prices, applied to a real-world team size. Pick a scenario.

Small construction firm. One admin, four operatives. Needs compliance, HR, estimating, billing.

Their stack
  • BrightHR · Connect
    5 employees @ £13
    £65/mo
  • iAuditor · Premium
    5 users @ £19
    £95/mo
  • HBXL · EstimatorXpress
    estimating
    £80/mo
  • Xero + Dext · stack
    invoicing + OCR
    £55/mo
Their total£295/mo
VS
Lynx Group
  • Work-Lynx
    £2.50 + 4×£1
    £6.5/mo
  • Site-Lynx Team
    5 seats
    £29/mo
  • Cost-Lynx
    1 estimator seat
    £22/mo
  • Invo-Lynx
    1 user
    £15/mo
Lynx total£72.5/mo
You save£222.5/moor £2,670/year

Prices shown are public 2026 list prices from the named vendors' own websites at time of writing. Comparison made in good faith under Business Protection from Misleading Marketing Regulations 2008 — the listed competitors offer broadly similar functionality at the prices shown. Annual contracts and discounts may vary.

The bundle maths

One bill across the four. Their floor is a salary. Ours is a fraction of a penny.

We bake AI into support, billing, drafting — so the cost they pass to you in seat-pricing, sales reps and twelve-month contracts simply isn't in our P&L.

Their stack
Procore
~£300/user/mo
BrightHR
from £83/mo
HBXL
£54/mo
Xero + Dext
~£55/mo
Combined~£492/mo
Public 2026 list prices. None of these talk to each other.
The Lynx Group bundle
Site-Lynx
from £12/mo · scales by team size
Work-Lynx
£2.50base + £1 / employee
Cost-Lynx
£22/user/month — all features
Invo-Lynx
£15/user/month · 30 days free
Bundle from£25/mo
Sole-trader bundle. A typical 5-person team lands at ~£55/mo. One login. One bill. Cancel any product any time.
You save~£440/moversus the category-leader pile, on a 5-person teamFull pricing
Why this exists

Built by a construction commercial manager — twelve years of estimating, BoQs, tender packs and CIS returns. Twelve years of watching crews juggle five tools that didn't talk to each other: three-hundred-quid-a-head site PM, sixty-quid estimating that only ran on Windows, accounting software that couldn't even do CIS, HR with twelve-month lock-ins and a paywall on every page.

Lynx Group is the tool I wished existedthe first time I priced a million-pound package. One login. Same data. One bill. AI doing the heavy lifting on the support side — because that's where the big tools spend their money, and that's the saving that comes back to you. Their floor is a salary bill. Ours is a fraction of a penny.

The founder · Site Lynx Group
Start free