Check data before it moves.
Convert UK dates, inspect a webhook payload or check structured output in your browser.
Use the free toolsSparrow Works / Small business systems
For salons, clinics, trades and other small businesses. I find where forms, bookings, follow-up or repeat admin get stuck, fix the agreed part and hand over a system you can use.
Fixed-price service projects from £250
Book a free 15-minute systems checkHenry Williams, sole trader, London.
01 / Services and prices
Choose a starting point. I check that it fits your tools and agree the work in writing before I start. Software costs are separate.
Send an agreed text reply when you miss a call, with your contact or booking link. You pay your own SMS costs.
Fixed price. Delivery within 5 working days after access and message wording are agreed.
One broken form, Zap or spreadsheet sorted in 5 working days.
Fixed price. Delivery within 5 working days.
Every enquiry in one place with an instant reply and follow-up reminder.
Fixed price. Delivery within 10 working days.
Missed calls texted back, bookings, reminders and review requests, all joined up.
Fixed price. Delivery about 4 weeks (20 working days).
Available after a project, optional monthly support from £59 a month: Care £59/month or Care Plus £99/month.
All services and full scopesNothing is due up front. When you approve the completed work, I invoice in full and payment is due within 3 days.
Also available: Google Reviews Booster £250, Spreadsheet to Airtable Move £450 and Sector Packs £550 each. See existing offers and terms ↗. Editable workbooks from £19 ↗.
02 / What I fix
A small fault can leave a customer unsure what to do or leave you checking several places. Start with the part that is not working.
I check the current route, agree one useful scope and test both the normal path and likely exceptions. You get a written handover with the change and any limits.
See options for repeat admin and small internal tools
02 / How it works
You deal with me directly, from the first conversation to the handover.
Show me what happens today. I send a short note with 2 or 3 possible fixes and a fixed price for each. No obligation.
We agree the scope, price, access and timing in writing. Once you accept the quote, I start the build. Nothing is due up front.
I test the normal route and likely exceptions. You review and approve the result, then receive a clear handover. I invoice in full on approval, due within 3 days. You own your accounts and data.
03 / The person behind the work
I am Henry Williams, a sole trader in London. I build, fix and improve technical systems for small businesses, and I keep the scope and schedule realistic.
For a London recruitment startup, I built a Webflow application form, routed entries through Zapier to Airtable and created a profile record and a Pipeline entry linked to the role. The form included optional CV upload and diversity questions. The handover was written.
No recruitment result or time saving is claimed.
The interactive examples on this site use fictional records and are labelled as demonstrations.
Read the applicant system details04 / Useful resources
Explore small tools, careful repair notes and the editable products separately from setup work.
Convert UK dates, inspect a webhook payload or check structured output in your browser.
Use the free toolsA step-by-step guide to run history, fields, filters, connections and safe tests.
Read the Airtable guideSee the linked profile and Pipeline records, optional form fields and written handover from a real build.
Read the build noteUse an enquiry, quote or weekly workboard workbook. The product pages show current prices and manual payment and delivery details.
Browse the workbooksI am Henry Williams, a sole trader in London working under the name Sparrow Works. I have built an applicant system for a London recruitment startup.
I work with tools such as Airtable, Zapier, Google Sheets, Webflow and existing forms or booking systems. I check what you already use before suggesting a change.
Quick Fix takes 5 working days. Missed-Call Text-Back Setup takes up to 5 working days after access and wording are agreed. Lead Catcher takes 10 working days. Enquiry to Booking System takes about 4 weeks (20 working days). I confirm timing in the written scope.
The agreed build, testing and handover. The systems check is free and does not include build work. Software subscriptions, phone numbers and SMS usage are separate and paid by you directly. No payment is taken by the booking form.
If I can't fix it, you pay nothing. Missed-Call Text-Back Setup and Lead Catcher include 14 days of fixes. Enquiry to Booking System includes 30 days. Available after a project, optional monthly support is available from £59 a month: Care £59/month or Care Plus £99/month. The package page explains the full scope.
Invite henry.williams85.contact@gmail.com through your tool’s user or collaborator settings, with only the access needed. Never share passwords. I agree access and data needs before starting, use test records where possible and explain how to remove my access at handover.
One simple next step
Start with a free 15-minute systems check. I review your request and agree a time with you. No automatic booking or payment.
Book a free 15-minute systems check