My new fave place to get a treat for under a fiver is The Tea House in Covent Garden.
Loads of infusions and great flavoured teas including this extremely tasty rum & vanilla combo for £2.75. I was expecting the flavour to be overbearing but it was actually quite soft though the aroma is pretty strong.
The shop is full of decorative tea infusers, tubs and pots to keep tea in, teapots - including Japanese cast iron ones - and of course great tea!
The lemon and ginger fruit blend is worth a buy as well. I'm intrigued by the Chinese gunpowder range so will pop back to give it a try.