Its the turn of todays Daily Telegraph to trot out this perrenial faovourite Beware sleeping gas gang, caravanners told By Martin Beckford Daily Telegraph 17/08/2007 The Foreign Office is advising caravanners to instal alarms after a string of tourists in France were gassed and robbed as they slept. It is also suggested that they stay only on official campsites after Britons who had parked overnight at roadside rest areas had valuables stolen, apparently after gas was pumped into their vans to render them helpless. In the most recent incident, an elderly couple who had parked in a lay-by near La Croix Valmer, in southern France, woke to find £1,200 in cash stolen as well as their passports, bank cards, mobile phones and satellite navigation system. Diane Bezer and Geoff Sillito believe thieves piped sleeping gas through the vents of their camper van, knocking them out so they could raid their camper van without fear of being disturbed. Mrs Bezer, of Winterbourne Bassett, Wilts, said: "When we woke up everything was gone and we had a really woozy feeling. The gas had an effect because we didn't wake up until 9am and we are usually awake at 7am. "We carried on with our holiday but it was ruined. I couldn't sleep at night after it happened because I kept thinking I was breathing gas. I still feel traumatised and can't get it out of my mind." A spokeswoman for the Foreign Office said there had been a number of reports about British holidaymakers being gassed and then robbed across France in recent years, mainly when they had parked in lay-bys and rest areas. She added: "There have been enough cases to warrant us mentioning it in our travel advice." The Foreign Office's advice on crime in France now states: "There is also a continuing problem of burglaries taking place during the night whilst travellers have been asleep in their caravans, mobile homes or other vehicles. "Thefts have occurred in rest areas on the A25 (Dunkirk to Lille) and A16 (Calais-Dunkirk) motorways. In some cases, victims had first been rendered unconscious by the thieves using gas. Try to avoid parking in isolated or dark areas of camping grounds or car parks, and consider installing an alarm in your caravan or mobile home." The Caravan Club said it had also received reports from victims and advises British tourists not to stay overnight in roadside rest areas known as Aires de Service, where most of the crimes are thought to have taken place.