This is a QR code of the link to the petition: petition.parliament.uk/peti...
Although the image I have posted is quite large, if you print it, you can probably make it much smaller and it will still work. You might just need to have the camera closer to the QR code.
For many of us, pointing our mobile phone camera at a QR code is an easy way of using web link.
Feel free to copy this code and paste it into any flyer or poster you might produce. Or add to any web pages you produce. And always print the actual link beside the QR code so everyone can see where it is supposed to take them.