The clause your customer’s purchase order quietly changed
Here is a trap that catches good businesses. You send a quote on your terms. The customer sends back a purchase order on theirs. You start the work. Months later something goes wrong — and it turns out the contract was on the customer’s terms all along, because in a “battle of the forms” the law generally treats the last set of terms sent and accepted before performance as the ones that govern.
The fix costs nothing: put your terms in front of the customer before the contract is made, refer to them on every quote and order acknowledgement, and do not simply sign the customer’s purchase order without a thought. Well-drafted terms sitting in a drawer protect no one; it is the deploying of them, on every order, that does the work. If you are not sure whose terms currently apply to your sales, that is worth ten minutes of a barrister’s time before it becomes worth rather more.