“58. How much detail must an invoice contain for it to satisfy reg 14 (g) & (h)? Without attempting to be definitive, our view is that it depends on the matters being invoiced. In relation to invoices for supplies of services, one example (one that was cited to us in evidence and in argument) is that of a professional firm (say, accountants) whose fee notes simply use a stock phrase such as “To professional services rendered in the period 1 March to31 March 2015 ”
“62. .... The descriptions on four of these invoices are reg 14 compliant, being 15 “Stone up and tarmac as agreed”; “supply of labour, plant and material at …” followed by the name of a specific site or sites (eg Sheffield), or to a contract (eg Measham). We consider that is sufficient. 63. However, five of the invoices stated “supply of labour, plant and material” but did not include the name of a site or contract, nor stipulate what period was covered by the invoice, nor any other identifying information. In these cases, we do not consider the invoices meet the requirements of reg 14 (g) & (h)...”