This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Comprehensive guide explaining debentures and secured lending under England and Wales law. Learn what a debenture is, how fixed and floating charges work, legal registration requirements, enforcement on default, and practical implications for companies and lenders.

Understanding Secured Lending and Debentures
In commercial finance, companies often borrow money to grow, invest, or manage cash flow. Lenders normally want assurance that they can recover their money if the borrower cannot repay. Secured lending is a type of loan backed by the borrower's assets, giving the lender legal rights over those assets if repayments are missed. A debenture is a key instrument used in secured lending by companies in England and Wales. It documents the borrowing and creates security over assets to protect a lender's position. This article explains what debentures are, how secured lending works, and why these legal tools matter in practical and legal contexts.
What Is a Debenture?
A debenture is a written legal document that records a debt owed by a company and includes provisions for security over the company's assets. It is one of the main ways in which lenders – such as banks, invoice finance providers or private investors – secure loans to limited companies and limited liability partnerships. A debenture can secure a loan through one or more types of security rights known as charges.
In simple terms:
- The debenture itself sets out the loan amount, interest, repayment terms, and security rights.
- It must be registered at Companies House within 21 days of being granted to retain full priority and enforceability against third parties and in insolvency. If not registered, the lender's security becomes unenforceable and the lender becomes an unsecured creditor in insolvency.
Debentures are most commonly used by companies; they are not typically used for sole traders or ordinary partnerships.
How Secured Lending Works
In secured lending, the lender takes an interest in the borrower's assets as protection for the loan. If the borrower defaults, the lender can enforce that security to recover what is owed. The form of security most frequently used in commercial secured lending is a charge.
Types of Charges
1. Fixed Charge
A fixed charge attaches to a specific, identifiable asset or assets, such as a property, machinery, vehicles, or certain financial assets. Once created:
- The borrower cannot sell, dispose of, or otherwise deal with the charged asset without the lender's consent.
- If the borrower defaults, the lender can take possession or sell the asset to repay the debt.
A fixed charge gives the lender strong control and priority over the proceeds from those specific assets in insolvency.
2. Floating Charge
A floating charge operates over a class of assets that routinely change in the ordinary course of business. Typical floating charge assets include:
- Stock and inventory
- Raw materials
- Accounts receivable (money owed to the company)
- Cash balances
While floating, the company can trade and sell these assets as part of normal operations without the lender's approval. The charge becomes fixed – a process called crystallisation – upon a defined event such as default or insolvency, after which the lender can enforce rights against the assets.
Many debentures combine both fixed and floating charges over different assets so that the lender covers both specified and changing assets under a single security agreement.
Registration and Priority of Debentures
For charge security to be effective against other creditors and in insolvency, the debenture must be registered at Companies House within 21 days of its creation. This creates a public record of the charge under the company's entry.
If a debenture or other charge is not registered in time:
- The charge becomes void against liquidators and other creditors.
- The lender loses priority status and may be treated as an unsecured creditor.
Registered debentures are ranked in order of creation, so earlier charges enjoy higher priority in distribution of company assets on insolvency, unless a separate priority agreement exists between lenders.
Enforcement: What Happens on Default
When a company defaults (fails to make repayment or breaches other terms of the loan agreement):
- Call in the loan: The lender formally demands repayment by the deadline set in the debenture.
- Appointment of an administrator or receiver: The debenture may give the lender the right to appoint an administrator to manage the company or sell the secured assets to recover the debt.
- Sale of assets: Under fixed charge rights, the lender may realise specific assets. Under a floating charge, following crystallisation, the lender can enforce against all secured assets.
These enforcement rights are powerful and are designed to reduce the risk of lending, but their exercise will usually have serious consequences for the borrower, including loss of control of assets or potentially loss of the company through insolvency processes.
Practical Considerations for Borrowers and Lenders
For Borrowers
- Loss of asset control: Giving security under a debenture may restrict a company's ability to sell or use assets without lender consent.
- Commercial flexibility: A floating charge allows normal trading until default.
- Impact on future borrowing: Existing debentures may reduce the scope for additional secured finance without complex priority arrangements.
For Lenders
- Priority over unsecured creditors: Registered debenture holders often receive repayment before others in insolvency.
- Security coverage: A well-drafted debenture may secure present and future indebtedness.
- Enforceability: Registration ensures enforceable security rights against third parties.
However, both parties should consider legal advice when drafting or entering into debentures and secured lending arrangements due to their complexity and long-term implications.
Conclusion
A debenture is a core legal instrument in secured lending for companies in England and Wales. It documents a loan and creates security over company assets through fixed and floating charges. Proper registration at Companies House is critical to ensure priority and enforceability. Secured lending reduces lender risk and can enable businesses to access greater finance, but it also involves significant legal rights over assets and obligations for borrowers. Understanding how debentures work, the types of security charges involved, and the associated legal processes helps directors, solicitors, and business stakeholders manage commercial lending responsibly and effectively.