Readers,
Useful to be able to type in the command line:
libreoffice --calc --nologo https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/450279/Progress_8_2015_opt_in_schools_final_list.ods
Then the spreadsheet appears directly from the web server!
Looks good with the 'load url bar' view of the url in the menu bar too, like a web browser!