# Do I need a Companies House number on my invoice?
If you operate as a limited company (Ltd or PLC), including your Companies House registration number on invoices is recommended for transparency and professionalism, though not strictly legally required. The number helps clients verify your business registration and adds credibility. Sole traders and partnerships do not have Companies House numbers.
## Related Topics
- Companies House number
- company registration number
- UK limited company invoice
- company number invoice