The only thing anyone who CAN invest in this country will think is... OOOOH look I can afford to buy somewhere in London and make a huge profit on it, and I won't have to pay tax on my earnings eslewhere, and I will buy a nodding dog. London gets tourists all year round anyway. They should have had the Olympics in a dying seaside town if they wanted to invest in tourism.
I think we should be stripping the whole thing back to basics, tourists will still come, they always do, and whilst they may not go away thinking 'great ceremony' they may go away thinking that we're skint because we ARE. No ones going to think 'lets build a factory here' not when its cheaper to get a slave to do it in a developing country. They're certainly not going to invest because of a large amount of fireworks.
Rather than over spending to attract tourists and possible stupid business people who can't add up, I would rather see the hundreds of millions invested in the whole country for the benefit of people who live here. That money could have kept some services going for another year or so, services that were needed and have been cut.
I love a good party, I'm a proud British citizen, I'll wave a flag at the Jubilee even though I'm not a monarchist so long as it doesn't cost a lot. But right now, right now is not the time to be showing off, splashing out or thinking about tourists that already come here anyway.