This is the Vancouver style for referencing, used at the Univerity of Portsmouth within the School of Pharmacy and Biomedical Sciences and the Radiography departments.
This guide is modelled on Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers (2nd edition). You may wish to consult this source directly for additional information or examples.
Author Initials/Organisation's name (if any). Title of the page [Microsoft Excel Spreadsheet]. Place of publication: Publisher; Date or year of publication [updated YYYY Mon DD; cited YYYY Mon DD]. Available from: URL
National Health Service. 2020/21 National Tariff Payment System: national prices and prices for blended payments [Microsoft Excel Spreadsheet]. National Health Service 2021 [cited 2022 Apr 19]. Available from: https://www.england.nhs.uk/wp-content/uploads/2021/02/20-21NT_Annex_A_National_tariff_workbook.xlsx
Note: In the example given there is no place of publication, but National Health Service is the publisher.