Thanks for the dot map Killroyan. Initially I saw the same spot as CreeDakota for that production site immediately to London's south that also picks up the Wheat, but I can certainly live with the proposed alternative that shares the resources around across a few more cities.
This is 'gut feel' rather than 'science and spreadsheets', but my inclination is to head east and north toward the AI unless there's a 'cracking' city site too good to miss to the south otherwise. The problem, as noted, is there's few sites to the east and north to get too passionate about.
I think that we would be well served by that Oasis-Oasis-Gold-Cows spot. Initially I had it including the Rice tile also, but I can see some logic in the proposed site. With the Cows and the Gold up, it can serve as a useful Settler or Worker spawn point at 'size 3' without a border pop and still pay for itself. I can see the reasoning in woopdeedoo's proposal of going one north, but that spot has its own drawbacks: it'll need a border pop to get the south east Oasis, we'll lose the south west Oasis as well as the surprisingly valuable riverside Desert Hills, while trying to avoid desert we pick up a desert in the north east, we would be settling on (and consuming) a Grassland instead of a Plains tile, and we'd lose access to fresh water from the Oasis for the city centre.
While I earlier liked the idea of turbo-ing The Great Wall with access to Stone, I now think that it might be overall too costly to pursue: We'll end up with either a quite sub-optimal spot either on or adjacent to the Stone tile, or a site that will take far too long to access the Stone (assuming a natural build of a Monument, then waiting for the pop, then building the Quarry), while in the meantime London could go: 'Settler > Worker > The Great Wall' or even: 'Settler > partial Worker > The Great Wall' in less time.
As such - I've scratched my earlier leaning to getting the Stone as a priority for The Great Wall. If we wanted it for The Pyramids or Stonehenge, then maybe it could come back into play as a priority. I must confess that I am a huge Pyramids fan, but in this game I think that we need to put our

into Settlers and land-grab.
I am in agreement with Killroyan on the attraction of getting up The Great Wall, for not only security from wandering Barbarians, but I anticipate given the low sea level map and the amount of room we seemingly have, that there will be a lot of Barbarian cities that we can potentially keep in 'reserve' if we do a good enough job at blocking off the south to ourselves and discouraging the AI from attacking Barbarian cities that are too far from their core empires. Great Spies

gp: via The Great Wall) without access to Alphabet are only 'so' useful, but if we can weed Alphabet out of the AI (maybe with Theology or Paper), I can see us running a mini-espionage game of technology theft.
So, in short, my vote goes to the proposed Gold-Cows-Oasis site to our east, and striving for The Great Wall in London as a priority. If we are able to get another Worker out of London, I'd put Mines on a Grassland Hill and the riverside Plains Hill in London's b.f.c..
The most distant Woodsman Warrior could scout out the fogged areas to the far east, but after that I'd bring him back for spawnbusting, while the other Warriors can move out a bit further for improved spawnbusting tile coverage, noting a 'pathway' for the proposed Settler to get to its site.