HP ColorChoice A4 paper designed specifically for colour printing, enables bold, vibrant colors and is perfected for documents requiring a professional look and feel. A3 paper is twice the size of A4 paper (it's the same shape as two pieces of A4 paper side by side in portrait). This paper is popular with graphic artists and designers. Our extensive office paper range includes stationery and digital imaging stalwarts such as Xerox, Canon, HP, Navigator (the world's favourite paper brand) and everybody's favourite budget office supplies offering, 5 Star. HP ColorChoice paper is designed with high opacity, enabling flawless double-sided and full-colour printing. The bright whiteness of the paper is ideal for documents requiring sharp texts and vivid colours with good contrast. The paper is specifically suited to colour printing projects and works perfectly on inkjet and laser printers. HP ColorChoice is the perfect paper choice for presentations, reports, newsletters and other documents requiring a professional look and feel.

HP Premium A4 White Paper Ream 90gsm (Pack of 500) - Staples UK

Laser and inkjet printers print in very different ways and certain papers are better suited to one or the other. Inkjet paper, for example, has good absorbency but does not allow the ink to spread sideways. The Guardian has a good article on the differences between inkjet and laser printing, including tips on their relative cost effectiveness The most popular paper in homes and in offices is A4 80gsm white paper which serves most internal and external communication needs. 80gsm is lightweight but flimsy. A4 is by far the most common paper size, compatible with most printers. When buying paper for your home or office, you need to consider size (A3, A4, etc.), paper weight (gsm which stands for 'grams per square metre'), colour and your printer (inkjet, laser).