I'm not an accountant, but I have run several businesses, including limited companies, limited companies as parts of an international group of companies, and partnerships, and I'm also retired now, so things change, but I'll answer to the best of my knowledge.
All limited companies have to file accounts at Companies House. However smaller companies can elect to only publish abridged accounts, or Small Company Accounts, and can also elect to be exempt from having an audit. To qualify as a Small Company you have to have two of the following: a turnover less than £10.2m, a Balance Sheet Total of less than £5.1m, have an average of less than 50 employees.
In The Championship and above no clubs will qualify as Small Companies, due to turnover. In League Two virtually all clubs will qualify as Small Companies. In League One you have a mixed bag, with five clubs hiding behind Small Company Accounts. It means that they don't have to publish a full Profit & Loss for the year, nor go into the details that we all find so interesting, and they can get away with just a Balance Sheet. The five are Cambridge, Cheltenham, Port Vale, Stevenage, and to nobodies surprise at all Wycombe.