The work after the work. It is where small businesses quietly lose money.

Small businesses were meant to run on skill.

The electrician rewires the house. The plumber fixes the boiler. That is the work customers pay for.

Then comes the work after the work: the invoice nobody paid, the quote nobody answered, the enquiry that went cold.

None of it is hard. All of it is awkward, and it never ends, so it gets put off.

Big companies have teams for this. Small ones have the owner, at 9pm, with a laptop.

Software promised to help and mostly gave owners more screens to check.

Knock exists to do the follow-up, so owners can do the work.

We build agents that knock on the doors that stayed shut. Politely, on your behalf, and only with your say-so.

Our rule is simple. The AI drafts. You approve. Nothing goes out unseen.

Trust is the product. One message that sounds wrong can cost you a customer, so every message is yours to read first.

We build for people who make and fix things, and who would rather be on a job than in their inbox.

We start small and earn each step. Our work unfolds in chapters, from one invoice to the whole back office:

[invoice]

Chase what you are owed, politely, with your approval on every message.

Knock Invoices

[running now]

A free pilot with UK contractors.

[paid]

Get paid end to end: payment links, and a connection to your accounting software.

[next]

Starts when Invoices has worked.

[quote sent]

Follow up on quotes, enquiries and reviews in the same approval-first way.

[after that]

Starts when Payments has worked.

[4]: Knock Admin; Renewals, supplier bills and paperwork that is due.; [later]
[5]: The follow-up layer; The same approval-first system for any small business.; [later]

[chapters have no dates. each one starts only when the one before it has worked]

Your customers should hear from you when it matters. We will knock for you.

The free pilot runs for 6 weeks with a small number of UK contractors.