At half past five on a Thursday, a fee earner needs a settlement agreement out before the client leaves for the evening. The shared drive returns four documents with near identical names, one saved last March, one carrying a colleague's initials, one marked final and one marked final version two, and nothing tells them which was last read against current law. They open the one they recognise, change the names and the figures, and send it.
That was the sensible choice. The document they copied went out on a real matter, no client complained, and the partner who approved it still sits two doors down. Opening the template instead means reading it properly and finding out at ten to six that it no longer holds. The firm inherits a document whose provenance nobody can reconstruct, and the next person to search that folder finds five near identical files rather than four.
Precedent banks decay without anyone deciding to let them. Legislation moves and a clause that made sense in 2021 sits untouched in a template nobody has opened since. The firm takes a firmer line on liability caps after a bad claim, the head of department circulates the new wording by email, and the email ages out of everyone's inbox while the old wording stays in the library. House style drifts one fee earner at a time.
What the drift costs you
Count the cost in supervision time first. If a partner spends an extra fifteen minutes on each of six documents a week because the drafting arrived in an unfamiliar shape, that is ninety minutes gone, and at a charge out rate of 250 pounds an hour the firm has spent 375 pounds of chargeable capacity tidying up work it should have received clean. Those figures are illustrative and your own rates will give a different answer, but the arithmetic runs the same way in any firm.
Risk is harder to price and worse when it arrives. A clause you retired two years ago going out on a live file is a negligence exposure nobody detects until the client relies on it. It does not look wrong on the page, which is why it survives review. It reads as ordinary drafting because it was ordinary drafting in the year somebody wrote it, and you find out when the other side takes the point.
What this does to juniors is the part partners notice last. A trainee learns your firm's law from whatever document sat nearest when they started, so they cannot separate a considered house position from one fee earner's improvisation in 2023. They carry both forward with equal confidence, and three years on they are supervising someone else and passing the same mixture down.
One owner, one date, one source
Give every precedent a named owner, a person rather than a department, whose name sits on the document and who answers for it. Put a review date beside the name and treat it as a real obligation, so a precedent left past its date gets flagged rather than quietly used again. Decide which single location holds the source version, make everything else a copy carrying no authority, and insist that drafting starts from the source.
You also need to know which version went out. When a client queries wording eighteen months later, the answer should not rest on whether the fee earner remembers which file they started from. The SRA's Standards and Regulations expect a firm to supervise its work and keep its people competent, and a precedent bank nobody owns makes both harder to evidence. If you cannot say who owns a template and which version reached the client, you have a supervision gap rather than an administrative one.
The connection to the system you already run is what makes any of this stick. The Bracton AI Assistant sits on top of the case management or CRM system your firm has, whether that is LEAP, Clio, Proclaim or another, and it drafts from your own precedents and your house style rather than from generic material. When a fee earner approves or amends a draft, that approved wording feeds back into the firm's precedent bank, so what your people reuse is what a qualified person signed off, and the audit trail records which precedent was used and who approved it. Nothing your firm holds is pooled across firms and nothing trains a model. A firm running Bracton, the case and client management platform, gets the same discipline with the document library and the matter file in one record. Those data commitments are terms Bracton Ltd contracts to before you sign.
The quickest way to find out whether your own precedent bank has drifted is to look at your live matters rather than at a demonstration built on somebody else's documents. To see what that turns up on your files, book a client account review.