www.instagram.com/bruce_johnson_watercolours

Fine art gallery located in the art galleries district of Chelsea New York. Connecting dealers and collectors with international artists. www.agora-gallery.com

Websites for photographers and artists. http://www.clikpic.com

UK online supplier of art materials. Huge range, great service and fast delivery. www.jacksonsart.com

UK online art materials supplier. Fast delivery, good service and free delivery on orders over £39 www.artsupplies.co.uk

WikiGallery.org, the largest gallery in the world

Society showcasing contemporary portraiture. www.therp.co.uk