The tunnels have the smell of damp concrete, an itchy, grey smell.  

After 13 hours on a plane in economy, 'losing' 8 hours, of being ill and the travel only makng you feel more snotty sick and awful, of waiting at Baggage Reclaim for  nearly 2 hours for only half the luggage to arrive, of the time taken getting out of Heathrow meaning no chance of a leisurely breakfast at Paddington, and still ahead is a 4 1/2 hours train journey to Cornwall....

 ...this is how chipper I feel at eight in the morning.

 I have no idea what time my body thinks it is, except it's a meal time of some sort - I've been back in the country a mere two hours and already Britain looks inefficient and amatuerish compared to every other country we've been through in the last three weeks.