FINAL LEADERBOARD (GB & Ire unless stated):
-7 C Cevaer (Fra) -6 G Orr, S Webster, A Quiros (Spa) -5 S Dodd, C Wood, JM Singh (Ind) Selected others: -3 R McIlroy -2 S Garcia (Spa) +1 L Westwood +5 C Montgomerie
Cevaer held on to his overnight lead
World number 449 Christian Cevaer produced a shock by winning the European Open by one shot.
The 39-year-old from France, whose only previous European Tour victory was the 2004 Spanish Open, edged out Steve Webster, Gary Orr and Alvaro Quiros.
In a closely fought final round, joint overnight leader Cevaer struggled to the turn in three-over 39.
The Frenchman then managed five pars in a row, birdied the 15th and parred the final three holes to clinch victory.
He finished with a final-round total of two-over 74 for a seven-under total of 281 - 13 more than Ross Fisher took in winning by seven last year.
Cevaer picked up a winning cheque of £300,000 for his efforts at the London Club in Kent.
"This is a fantastic day for me," said the champion. "I am ecstatic to come out on top.
"What a great surprise it was to see the big leaderboard when I was coming up the hill at the 18th and that I was the only guy left on seven under. I am proud to get the job done."
Cevaer, who had missed six cuts in 11 previous starts this season and had a best result of tied 31st, endured a nailbiting final three holes.
He got up and down to save his par four after missing the green with his approach at the 16th.
What can I say about my 18th-hole play
European winner Christian Cevaer
The Frenchman then missed the putting surface in regulation at the par-three 17th but nevertheless managed par after sinking a tricky four-footer.
Then on the troublesome last he two-putted from the fringe of the green.
"What can I say about my 18th-hole play yesterday and today," added Cevaer. "It was fantastic.
"This is what we golfers work for, to be in that situation and to pull off the shots we want when we need to."
I just wish my golf was better - I've got no confidence at all
Northern Ireland's Rory McIlroy, who began the day three shots behind the leaders Jeev Milka Singh of India and Cevaer, finished with a total of 285 after a three-over 75.
Warwickshire's Webster, who led in the clubhouse after a final-day 71, doubled his earnings for the season with his cheque for £134,000 for that share of second place.
World number four Sergio Garcia produced a 68 to leap from from 47th to final placing of 13th.
Colin Montgomerie found the lake on the last which resulted in a triple bogey as he finished with a final round score of 75 for five over - 55th overall.
Next year's Ryder Cup captain, who has not had a top 10 finish since last July, said: "I just wish my golf was better - I've got no confidence at all."