Trades, contractors and field service
One system from the first call to the last invoice.
A service business lives in the gaps between tools: the enquiry on the phone, the quote in Word, the job in the diary, the invoice in the accounts package, the chasing on WhatsApp. Every handover is a retype and a chance for something to drop. iS3 joins the chain into one system, built around how you actually work, so the owner stops being the glue.
more productive: one client's result after we joined their stock, orders and customer records into one system
a week spent on admin and finance by the average UK small business owner (American Express SME Barometer, 2026)
of UK owners say paperwork gets in the way of running the business (same survey). That is the problem we remove
Where most businesses are now
- 1
Paper and memory
Spreadsheets, a diary, WhatsApp, and it all lives in the owner's head
- 2
Digitised
Software in place, but the systems don't connect and people rekey between them
- 3
Joined up
One source of truth; every tool reads and writes the same data
- 4
Automated
Rules handle the routine: reminders, confirmations, chasing, reports
- 5
Ai-enabled
Ai drafts, answers and flags, on solid data, with a person approving
Most businesses we meet are at stage one or two. The mapping day tells you exactly where you are, and what the next step is worth in hours and money.
What changes day to day
- An enquiry becomes a quote, the quote becomes a job, the job becomes an invoice, and nobody retypes a name, an address or a price along the way.
- Reminders go out before the visit and the chasing after the invoice, in your tone of voice, so the no-shows drop and the money arrives sooner.
- Site notes and photos taken on a phone, with no signal, become the report draft by the time the van is back, instead of a week of typing up and hunting for the right pictures.
- You ask "what's booked next week and what are we owed?" and get an answer, not a spreadsheet, from live data on your phone.
Where the money and the bigger contracts are at risk
Job to cash
For most contractors the first risk is operational: leads disappearing between inboxes, estimates not followed up, poor scheduling, paper or duplicate forms on site, photos scattered across phones and folders, materials not linked to jobs, and slow invoicing.
Source: iS3 sector research, October 2026
Tier-one and public-sector work
Build UK's Common Assessment Standard is accepted by a growing list of major contractors and public-sector clients, and public bodies can use it for works contracts under the Procurement Act. It asks about information security, and holding Cyber Essentials Plus or ISO 27001 covers parts of that.
Source: Build UK; Procurement Act guidance
Made safe, and made to last
Everything we build is governed from the start: clear ownership, an audit trail, and human approval on the decisions that matter, delivered in line with ISO 27001 and ISO 42001. We bring your team along as we go, because the second biggest reason these projects fail, after poor data, is that nobody did.
The tools you already use
Built to work with what you already use. If your software can talk to other software, and most can, we plug it in rather than replace it, and you can ask the whole system questions in plain English.
- Enquiries & quotes
- Jobs & scheduling
- Invoices & payments
- Customer messages
- Accounts & payroll
- Stock & suppliers
One source of truth. The phone, the diary, the van and the accounts all read and write the same record.
How we work
- 01
Map how you actually run
A day with you and the people who do the work: who takes the call, who prices the job, who books it, who chases the money. Every process, every tool, every spreadsheet. You get the map and a prioritised list, yours to keep either way.
- 02
Bring the data into one place
One secure database for customers, quotes, jobs, schedule, invoices and payments. Your existing tools sync into it; nothing is typed in twice. The accounts package stays the accounts package; it just stops being the only place the truth lives.
- 03
Automate, then add Ai
Rules take over the routine: quote follow-ups, booking confirmations, on-the-way messages, invoicing on completion, payment chasing. Ai drafts quotes and answers questions. A named person approves anything that goes to a customer or the bank.
Start with the mapping day. The map is yours either way.
Is your business working, safe and built to last?
Answer 9 questions in about 3 minutes and get your score for Make it work, Make it safe and Make it last, plus the three actions worth tackling first.