The investigation came about after Police in Avon and Somerset released in a statement that they had received ''a number of complaints'' after the artist announced his plans for the giveaway.

''It is a criminal offense under the Representation of People Act 1983 for any voter to accept or agree to accept a gift or similar in return for voting or refraining from voting. Any person participating in an offer to receive a gift is at risk of being prosecuted,'' said a spokesperson.

Banksy's aim was to encourage voters from six districts in his home city of Bristol to share a photo of their ballot paper opposing the Conservative party. He planned to send to these voters a print via post.

For his election campaign, Banksy had created a limited edition of his Balloon Girl stencil. The new version of the iconic piece featured a heart balloon with the Union Jack flag. However, the giveaway was cancelled following the police investigation as treating, the act of influencing a voter's decision through bribery or gifts, is illegal in the UK.

Image: Banksy Image: Banksy

Banksy's website has since been updated since the investigation with an image that read: ''Product Recall: I have been warned by the Electoral Commission that the free print offer will invalidate the election result. So I regret to announce this ill-conceived and legally dubious promotion has now been cancelled.''