Trying to buy trousers

For a long time it has been my understanding that the height of the British population as a group is increasing. On that basis I'd assumed that my difficulties in acquiring trousers that are long enough would slowly die away. Based on a look around the shopping centre in Watford today, it seems that the opposite is actually the case.

I'm not thattall at around 6"4'. Any suggestions ?

Listening to: Rom and Comix: The Day After