Lindam are currently running a voucher in with their stair gates for the Home Safety Kit for FREE (P&P £4), whereby you fill in your details, send a cheque and the receipt to receive your FREE (P&P £4) Home Safety kit.
However that's hassle and doesn't factor in cost of the envelope, stamp, and you need something called a cheque book? Beats me what one of them is. And then you have to leave your chair to find a post box. What a nightmare!
So I rang them on 08701 118 118 which is free (coz I'm at work) or 01423 855800, explained I had just bought a couple of stair gates with this voucher in and could I order over the phone. "No problem sir, how many would you like?" Result. Didn't ask for a copy of the receipt or anything.