"Fair dealing" is an exception under the Copyright, Designs and Patents Act which allows a certain amount of copying for purposes of "research or private study". Very briefly, "fair dealing" is understood as:
You may also copy from any type of work for the purposes of criticism or review (e.g. in an essay, article or thesis) provided that you acknowledge the source. The Act does not define the extent of copying permitted in this case but the generally accepted limits are:
Although not established in law, it is generally accepted that the principle of fair dealing applies to electronic works as well as to printed works. However, any copies made must be for personal use, and should not be distributed electronically (e.g. by uploading onto a server) or as printed copies without permission from the copyright holder.
You can find this information in our Copyright library guide (see link below)