Add me to the list of people astonished that they get permission to do this. With all due respect to a poster above, the extent of the road closures and the duration are substantially more disruptive than the marathon. And quite aside from access to LHR/LCY (which is not easily solved for many people simply by saying "well you oughta take the Tube," especially if they're not based within a short walk of a station), this seems like it poses a particular burden on people with mobility challenges who might rely on road transport simply for their normal weekend activities. Returning to some semblance of a BA focus, one wonders if/how they provide for travelers caught out by this transport fiasco who end up missing their flights.