these do not require registration.

While all records of all a company's debentures need to be kept by the company, debentures secured by a "charge" must additionally be registered under the Companies Act 2006 section 860 with Companies House,[53] along with any charge on land, negotiable instruments, uncalled shares, book debts and floating charges, among other things. The purpose of registration is chiefly to publicise which creditors take priority, so that creditors can assess a company's risk profile when making lending decisions. The sanction for failure to register is that the charge becomes void, and unenforceable. This does not extinguish the debt itself, but any advantage from priority is lost and the lender will be an unsecured creditor. In National Provincial Bank v Charnley[54] there had been a dispute about which creditor should have priority after Mr Charnley's assets had been seized, with the Bank claiming its charge was first and properly registered. Giving judgment for the bank Atkin LJ held that a charge, which will confer priority, simply arises through a contract, "where in a transaction for value both parties evince an intention that property, existing or future, shall be made available as security for the payment of a debt, and that the creditor shall have a present right to have it made available, there is a charge". This means a charge simply arises by virtue of contractual freedom. Legal and equitable charges are two of four kinds of security created through consent recognised in English law.[55] A legal charge, more usually called a mortgage, is a transfer of legal title to property on condition that when a debt is repaid title will be reconveyed.[56] An equitable charge used to be distinct in that it would not be protected against bona fide purchasers without notice of the interest, but now registration has removed this distinction. In addition the law recognises a pledge, where a person hands over some property in return for a loan,[57] and a possessory lien, where a lender retains property already in their possession for some other reason until a debt is discharged,[58] but these do not require registration.
Fixed and floating charges
Main articles: Fixed charge and Floating charge