Residents in an Oxfordshire town have reacted angrily after a 300 foot-large Big Brother 'eye' logo was painted next to a renowned landmark in the area.

The logo, which was filmed for a Big Brother 4 ident, was sited next to a Bronze Age-dated chalk horse on a hillside in Uffington after Channel 4 paid the National Trust £2000 to use the site.

Local residents have demanded an inquiry into the appearance of the logo, amid fears that other National Trust-protected sites could be loaned out to appear in other advertising campaigns.

"People should not think the site is a free advertising hoarding," said Alan Hardy, senior project manager of Oxford Archaeology.

However, a Channel 4 spokesman insisted that the stunt was 'environmentally friendly', as the chalk - which is due to be washed off on Monday morning - would not damage the hillside grass.