Increasing the population of London in one easy step

London is the most populous city in Europe. There is absolutely no reason to increase the number of people in it at any given time.

Mindful of this, they decide to organise a marathon there every year with 46,500 entrants.

If you were to assume that Dr Cath was an average entrant (something I'd never do, of course) then this would mean an extra 940,000 people descending on the Capital on race day - increasing London's population by 12.5%

That's a lot of people, and it doesn't include all of the support staff, official and other folk who will be required just to run the thing.

It also doesn't take into account the fact that Dr Cath is far from ordinary in one respect - the sheer number of people who will be turning up to support her! There are roughly 20 people expected at the moment, but every time we mention the event to someone new, we get more people threatening to join us.

Supporting Dr Cath should be straightforward, for two reasons. Firstly, Asthma UK have a couple of support stands that we can congregate at - and Asthma UK's "snot green" corporate colour scheme is both blindingly obvious in a crowd and bloomin' vile.

Secondly, a number of our friends are intending to do something that will make them "un-not-spottable" in the crowd. Now, quite what this is I'm not sure, but knowing who they are, I'm both certain it will be stunning and deeply worrying.

Let's just hope the car makes it to London without deep frying its electrics again...