Queen thank you for that, I'm about 20 miles outside, so not far, a quick jaunt round the M25 whilst the kids are in school me thinks! Obsessed muchly 
Oldest DC & partner have gone away for the weekend somewhere in Europe, dropped them at the airport this morning & this afternoon I get a text to let me know there's a Pokestop outside their hotel, no "hi Mum, arrived safely, it lovely here etc" 
Nutella I'll look out for you, I only have 1 Charmander that I caught up on Tower Hill, so I'm really hoping to catch enough to be able to do both evolves, I maybe walking round there all day.
The DC's & I caught some decent Dratini's along the Southbank, walked from Westminster to Tower Hill, I had a 800 something Dragonair which gave me a 1871 Dragonite, so might be worth a wander around there if you get chance.