/work · Penarth Plumbing · Trades
Invoice extraction at Penarth Plumbing
4.2 hours per week recovered for the office team.
↓ 84%
Processing time
£2,400
Cost saved / month
96.4%
Accuracy
The problem
A 12-person plumbing firm processed every supplier invoice by hand — typing line items into Sage, reconciling against POs, chasing missing fields. Four hours per week, every week, on busywork.
Our approach
We piloted a Claude-based invoice agent in week two. It extracts line items, classifies them, and posts a draft to Sage for human approval. Eval gate at 96% accuracy on 240 historic samples.
Outcome
After eight weeks live: 84% reduction in invoice processing time, £2,400/month in office time saved, zero accuracy regressions on the human review.