Obtaining the BNC
BNC-XML, BNC Baby and the BNC Sampler are available for download for free from the Oxford Text Archive.
If you do not have corpus analysis software available to use with the BNC, you might wish to consider using one of the online services which are available, in preference to obtaining your own licence and copy of the corpus. The British Library offers a free Simple Search service where users can search the corpus and see how often a word/phrase occurs. Up to 50 hits are displayed.