We've got tickets for Hamilton tonight so not going really isn't an option. I'm up north at the moment where its only about 21 degrees and I'm stood at the train station sweating, its forecast 38 in London tomorrow 
We're there all day tomorrow as our train home isn't until 8 pm, any suggestions of what to do to prevent from melting? We've got tickets for a couple of exhibitions but nothing else planned. Just me and a friend no DC.
(I know I'm being pathetic but I really don't do well in the heat
)