then have the benefit of any security interest in favour of the creditor for the original debt. Conceptually this is an important point, as the subrogee will take the subrogor's security rights by operation of law, even if the subrogee had been unaware of them. Subrogation rights against trustees A trustee of who enters into transactions for the benefit of the beneficiaries of the trust is generally entitled to be indemnified out of the trust assets; this is secured by way of an equitable lien or first charge over the trust assets. This is a proprietary security interest. Trust creditors (that is, persons who have become creditors of the trustee qua trustee) may be entitled to be subrogated to the trustee's lien. This is a particularly precarious 'right' of trust creditors: a trustee may not have a right of indemnity (for example, because the trustee has committed a breach of trust in incurring the liability to the creditor in question) or it may be limited (for example, where the trustee has committed an unrelated breach of trust and the clear accounts rule operates). In some jurisdictions it is possible for the trustee's right of indemnity to be excluded altogether. In these cases, subrogation may be rendered worthless or impossible. Lender's subrogation rights Where a lender lends money to a borrower to discharge the borrower's debt to a third party (or which the lender pays directly to the third party to discharge the debt), the lender may be entitled to be subrogated to the third party's former rights against the borrower to the extent of the debt discharged. Miscellaneous Where a bank, acting on what it believes erroneously to be the valid mandate of its client, pays money to a third party which discharges the customer's liability to the third party, the bank is subrogated to the third party's former remedies against the customer. Effects If subrogation is available, the subrogated party is entitled to stand in the shoes of another and enforce that other party's rights. If the equity is established, the court may effect the subrogation remedy by way of equitable lien, charge, or a constructive trust with a liability to account. Crucially, the claimant's rights are wholly derivative, hence the claimant has no higher rights than the person to whom he or she is subrogated. Waiver of subrogation In practice insurers may agree to a waiver of their