How many fake scenes does TV have to stage before it learns its lesson? Never too many, it seems. Some 14 years after staff were suspended from Vanessa Feltz's BBC TV show for employing fake guests, Top Gear has been criticised over a stunt in which diners in a riverside restaurant were apparently drenched by a hovercraft made out of a Ford Transit van. The Daily Mirror reports that the scenes were staged on the River Avon, with actors playing the enraged diners. Viewers vented their anger online, with one saying all the "off the cuff" chats were scripted. A BBC spokeswoman said she thought Top Gear viewers were "intelligent enough not to have been taken in". Will this episode come back to bite the BBC in the tail like the row over fakery in naming the Blue Peter cat?