Organise an unpaid invoice dispute

Facts & timeline checklist

• Who was invoiced (name, business, contact details you have).
• Invoice number, date issued, due date, and amount (including VAT if shown).
• What the invoice was for — short factual description of goods or services.
• Payments received (if any) and remaining balance.
• Each chase: date, channel (email/letter/call), and what was said or promised.
• Any dispute raised by the other party, and when.

Evidence to label

• Copy of the invoice / statement.
• Contract, quote, or purchase order if you have one.
• Proof of delivery or work completion (emails, photos, sign-offs).
• Bank records showing non-payment or partial payment.
• Chasing correspondence in date order.

What your Case Pack contains

Situation summary, parties, chronology (including chases), labelled evidence list, amounts, and your stated desired outcome — organised for your records or to share with an adviser. Not a legal opinion.