A WorkLighter how-to
What's safe to paste into AI, and what to strip out first
Last updated 7 July 2026
You can safely paste most of your everyday business writing into an AI assistant (a chat tool at about £20 a month): your own price list, the reply you're drafting, the notes you'd happily read out to a colleague. What to take out first is other people's private details the assistant doesn't need to see, things like full contact details, card or bank numbers, and health notes. Strip those, keep the rest, and check once what your plan does with what you type.
What is usually fine to paste?
Most of what you'd hand an assistant is your own business's information, and that's fine. Your price list, your opening hours, your house rules, the reply you're drafting, three of your past emails so it learns your voice: none of that is a risk, it's just your own work. A customer's message is usually fine too, once you've taken out the bits the assistant doesn't need. A rule of thumb: if you'd happily show it to someone you hired for the day, it's fine to paste. The assistant is that temp for the day. It needs enough to do the job and nothing more.
What should you strip out first?
Take out the personal details the job doesn't actually need. To draft a reply you need the question, not the customer's full name, address and phone number, so swap the identifying bits for a placeholder like [CUSTOMER] or [ADDRESS] and paste the rest. A few things should never go in at all: card or bank details, passwords and logins, anything a customer gave you in confidence, and health or medical information unless you have a clear reason and the right to share it. It becomes quick once it's a habit: read what you're about to paste, take out what the assistant doesn't need, then paste. Most of the time the assistant does the job just as well from the anonymised version.
What do the paid plans do with your data?
This is worth understanding once. When you type into a mainstream assistant, your words are sent to the company's servers to write the reply; that's how the tool works at all. Whether they're also kept and used to train it depends on the plan and your settings. Free tiers are the most likely to use your chats; paid plans are usually less so, and most assistants have a setting to turn off training and chat history. None of this makes the tool unsafe for ordinary business writing. It's the reason you strip the private bits first, and the reason it's worth finding that setting once and choosing what you're comfortable with. If you handle a lot of client data, look for the business or team plan, which usually promises not to train on your content at all.
Can the assistant help you keep inputs clean?
It can, if you tell it to. Give it a standing instruction to work from placeholders and to flag anything sensitive you've pasted by mistake, and it becomes a second pair of eyes on the way in.
Where AI still needs you
The assistant can't tell what counts as confidential in your trade, and it won't stop you pasting something you shouldn't. The responsibility for personal data stays with you, the business, not the tool: under UK data protection rules it's your call what leaves your files. If you handle health records, children's details or financial information, you may have duties that go beyond this page, so check them rather than guess. The safe moves are the boring ones: strip the private bits before you paste, keep the never-paste list in your head, and set your training and history preference once. Two traps sit either side of this, treating the tool as perfectly safe and treating it as too risky to touch at all, and there's more on both in the AI mistakes small business owners make. To see a full workflow that handles customer details carefully, a complete recipe is free to read.
Knowing what's safe to paste, and what to strip out first, is what lets you use AI on real customer work without worrying. The Time Refund builds the habit into ten setups, with the exact prompts, a fillable workbook and a 30-day plan.