Looking For Good, Free Study Spots

TL/DR: Looking for a free, quiet study space with outlets. Additional features are welcome.

Hello all!

I'm looking for a good study spot. I have a (terribly insistent) learning disability that means I have to work in certain conditions, as well as financial constraints. So, being quiet, free to access, and having accessible outlets to plug stuff in are musts. I've thought about public libraries but I haven't been in London long enough to know which ones fit my needs.

Wants include:

• (ABSOLUTE BEST***) Has study pods - the things where you sit in a mostly-enclosed pod that has a desk, an outlet, and some sort of closeable privacy barrier. I can produce pictures of what I mean upon request
• Is private, ie a study room. If it's private it doesn't necessarily need to be quiet, as it being private will make it quieter by nature
• Has a nearby Tim's (Or a similarly priced cafe/shop/store) for the inevitable frustration break with mandatory sweet drink.
• Can't think of any more right now, but if you think of some more possible wants that also have all my needs, feel free to let me know