i'm up 14% year to date, unilever, diageo, nestle.back and verify whether the strategy will work. if you have superstitious investment strategies of your own, we want to hear about them. e-mail us or tweet us @cnbcbex. >>> now, the final countdown is on. and with just two weeks to go to the olympics, athletes and officials are expected to begin arriving in london for monday. however, fears are mounting that london's infrastructure isn't ready for such a major event. a key motorway remains closed, and one of the country's top mobile networks has suffered a 24-hour blackout. meanwhile, 3,500 security officers have been implemented. maybe it's not all bad news. the games could provide a much needed boost to the economy, in fact. that's the argument from kevin daly, uk economist at goldman sachs. i began by asking him if britain would actually benefit economically from the olympics. >> we find there is quite material benefits, economic benefits, from the olympics. in the short term, we think the boost will be 3.4%. the longer-term benefit