The mystery of the Loch Ness monster is Britain’s favourite quest, according to a survey today.The hunt for the elusive Nessie was chosen by one in five (21%) Britons polled by YouGov for MSN Search.The search for the Lost City of Atlantis and the Holy Grail came next, with a combined 34% of votes.The hunts for Flight 19, which vanished in the Bermuda Triangle in 1945, and the Yeti came fourth and fifth.Although Elvis’ music lives on, the poll found most people have finally accepted he no longer does – just 2% named him as their preferred search.And 22 years after Shergar disappeared, it appears the hapless racehorse is no longer missed – he also gained only 2% of the votes.In the poll of the nation’s favourite books involving a search, Lord of the Rings and The Lion, The Witch and The Wardrobe beat the UK’s current bestseller, The Da Vinci Code.One in four voted for JRR Tolkien’s Middle Earth trilogy, while 16% chose CS Lewis’ Chronicles of Narnia.Robert Louis Stevenson’s Treasure Island and Lewis Carroll’s Alice in Wonderland were in fourth and fifth place.Meanwhile, Christopher Columbus was the nation’s favourite explorer, according to the survey.The Italian who found America won a third of votes, ahead of homegrown discoverers like Captain Cook (20%) and Sir Walter Raleigh (13%).In the nation’s favourite shows involving a “search for a star”, both Pop Idol (16%) and X Factor (15%) narrowly beat their BBC rival, Fame Academy (13%).