At that moment there was a huge explosion, and all I could see was a huge kaleidoscope with every colour of the rainbow swirling around it, and at the centre was the taxi driver's head, turning furiously like a spin-top that had just been released.
My body felt very hot, and then suddenly, as quickly as it had started, it all stopped as I fell to the ground in a heap.
'Are you OK?' asked the taxi driver
'I think so,' I replied, 'where are we?'
'We're back in 2011, where we belong, at the Oval Square back at the Greenwich Millennium Village. Let's go over to Martin's house for a cup of tea.'
I had no idea who Martin was, but I wasn't about to argue and a cup of tea sounded like a great plan. It occurred to me that the Oval Square was a funny name, as a square cannot be oval, and something that's oval cannot be square.
There were big residential buildings on three sides of the oval square, with shops occupying the ground floor level. There was a convenience store called Nisa, an estate agents called 1st Avenue, a pharmacy called The Village Pharmacy and a dry cleaners called Starshine.
We walked up to one of the residential building entrances, and the taxi driver punched in the number 334 to the shiny intercom panel. There was a slight pause, and then a man answered.
'Hello?' the man said.
'Hello, is that Martin?' asked the taxi driver.
'Yes, this is Martin, come up. I'm on the 3rd floor.'
A buzzing sound came from the door, and the taxi driver pulled it open. We walked down the corridor and waited for the lift. I noticed that there were hundreds of letter boxes in the corridor, and wondered how the postman managed to get to the letterboxes through the electric door. He must have a key, I guessed.
When we arrived on the 3rd floor, Martin was waiting for us.
'Follow me' he said, and hurried down the corridor to flat 334.
Martin was a very tall, thin man with no hair. His flat was very empty, with almost no furniture. The main room had a kitchen and a balcony, with three plastic chairs grouped in the centre.
Martin went straight to the kettle to fill it up with water from the tap. The taxi driver and I sat down on the plastic chairs and waited to be offered a cup of tea.
'So,' said Martin, 'what have you guys been up to then?'
'Well,' replied the taxi driver 'we've been to 2060 and seen some very strange things. More importantly, we have seen some very worrying things.'
'Yes,' I agreed. 'There will be a flood in 2025, and from then on the weather will behave very erratically.'
'Oh dear,' said Martin, 'that's very worrying indeed. Is that all that happened when you were in 2060?'
'We also saw an animal that was half pig and half horse that belonged to a woman who ran in the Olympics.' said the taxi driver.
'Ah!' exclaimed Martin. 'Now, what did this woman tell you? Tell me all, in great detail my friends.'
'That's it really, there isn't much more to say,' said the taxi driver, acting slightly nervously.
'What about the dia-' I started.
'Shhh!' hushed the taxi driver.
'Carry on!' boomed Martin 'Tell me more!'
'It was nothing,' I lied, 'I was just going to ask the time.'
'Tell me the truth, tell me about the diamond!' Martin screamed.
Just then something very odd happened. Martin turned from a very tall, thin man with no hair into a very short, fat, hairy woman with red eyes and blue lips.
'It's a trick!' shouted the taxi driver. 'That's not Martin! Let's get out of here!'
Jamie Walker is a local resident
