It is relatively common for lenders in England and Wales to take security over all of the assets of a borrower or obligor in the form of a debenture, particularly in leveraged finance transactions. A debenture typically contains a combination of security interests, including fixed and floating charges over different classes of assets.
Fixed charges will typically be taken over specific types of assets, in respect of which the lender can exercise the requisite amount of control required under English law to make a fixed charge valid. Whether or not a lender has a fixed charge over an asset will depend on the level of control exercised over that asset by the lender in practice, rather than what the security document says. Realisations from fixed charge assets will have a higher priority status in the order of distributions in an insolvency in England and Wales, so lenders are often keen for as many assets as possible to be subject to a fixed charge.
Assets typically covered by a fixed charge will include assets such as real estate, plant and machinery, subsidiary shares, and intellectual property. Accounts of the borrower/obligor may also be included, however those accounts will generally need to operate as blocked accounts with sufficient lender control in order to be classified as a fixed charge (which may not be practicable in the context of an account required by the borrower for trading purposes and hence why market practice often dictates that these accounts are only "blocked" following a default or enforcement).
A floating charge, on the other hand, essentially "floats" over the assets it secures, generally enabling the borrower to deal with those assets in the ordinary course of business until the floating charge is "crystallised" under the terms of the security document and/or by operation of English law (which will often happen where certain enforcement action is taken, for instance). Crystallisation essentially removes the borrower/obligor's freedom to deal with the relevant assets. Realisations from floating charges in an insolvency will be subject to various statutory deductions under English law before they are distributed to the lender. However, the strict control requirements for a fixed charge often mean that floating charge security is the best security a lender can expect to obtain over certain asset classes.
Lenders will often take a sweeping floating charge over all of the borrower/obligor's assets which are not already subject to a fixed charge. This provides the benefit of having a security interest over all of the borrower/obligor's assets (and so priority on returns from those assets over unsecured creditors, subject to the required statutory deductions), but it also has the benefit of providing the lender with a qualifying floating charge (discussed below).