Always check that the creator of the image has given permission to re-use their work
Always correctly reference where you got the image from - even if it is copyright free!
"the artists’ gallery for everyone"
"is the online home for every public art collection in the UK"
"Tate is one of the world's leading art institutions. Its mission is to increase the public’s enjoyment and understanding of British art from the 16th century to the present day, and of international modern and contemporary art."
"The V&A is the world’s leading museum of art and design, housing a permanent collection of over 2.3 million objects that span over 5,000 years of human creativity."