I have to say that sounds like a pretty fantastic job! Not to mention that you live near some of the best museums in the world. Overall, I'm pretty jealous. ;)Welcome to the forums, and thanks for sharing the photos of the Roman reenactors!
Yes there are many advantages to living in or near to London and that is definitely one of them. My favorite is the British Museum. I find it very relaxing to just wander around the galleries.