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Definition
Crystallisation converts a floating charge into a fixed one over the assets in the class at that instant. It is usually triggered by an event of default, appointment of a receiver, or insolvency.
In plain terms
Until it crystallises, you can trade your stock freely. The moment it does, those assets are frozen as the lender’s security.
Why it matters for your company
Crystallisation ends your free use of the charged assets, so it typically signals a serious situation. Understanding the trigger points helps you act before they fire. See administration.
Related reading

Floating charge
A floating charge is security a lender takes over a changing pool of business assets — such as stock, cash…
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Fixed and floating charge
A fixed and floating charge secures a lender over both your specific assets (fixed) and your changing assets…
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Receiver
A receiver is appointed by a secured lender to take and sell the specific assets it holds security over —…
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Administration
Administration puts an insolvent company under a licensed administrator and a legal moratorium — a…
Read →Funding for UK limited companies
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