An altered version of Banksy's 'Girl with Balloon' has mysteriously appeared on Princes Risborough's Tennis Clubs newly renovated clubhouse.

The artwork is similar to Banksy's original 2002 mural which appeared on Waterloo Bridge in London, however instead of a balloon the work shows the girl throwing a tennis ball, and beside her 'pranksy' is written.

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A member of the tennis-club said: "The art mysteriously appeared over-night just over a week ago.

"No-one knows who the artist of 'pranksy' is."

Whether the mysterious artwork was a spontaneous prank or a more thought-out plan remains unknown as well as the artist responsible.