Following some of the advice in this thread I was also finally able to win my first UHV as England. I just wanted to share some of the tips I found useful that the other posters haven't covered. I played on regent, normal speed.
Beginning:
- I kept the starting civics until I got Guilds and then switched to Regulated Trade and Tributaries which served me well until much later
- I settled London, Edinburgh and Dublin as per the suggestions and used the culture slider to access the two fish sources
- I built only one additional worker, I felt four in total was enough
- As soon as I had Compass I gifted a tech to the Malinese to get open borders and I used my fourth settler to settle a city in the rainforests south of their lands (where Dutch Elmina is in 1700 scenario) to get access to gold, crab, gems and ivory and my first city in Africa
- To begin with my three main cities built only Monasteries, Libraries, Forges and Walls (just in case against Vikings, which didn't attack this time) and the rest was all military units for quite a while - mostly Crossbowmen and Galeasses. I built many, I must've had like 12 Galeasses and countless Crossbowmen at the end of the medieval era. Before mass colonization began I built Markets in all three cities, Theatres in Edinburgh and London and finally a National Theatre in London.
- A great engineer and scientist build a Manufactory and Academy in London
- I wanted to try and have a fun tech race with France so I traded with them just as everyone else
Middle:
- I decided not to spread our religion so whatever spread I got happened naturally
- A great merchant was sent to Rome to get us 1800 gold to fuel a high research rate for quite a while. Later I got two more scientists which I used to bulb some technologies
- The Reformation happened in about 1450 just as I was starting to colonize North America and I converted. England, Portugal, Poland and France all declared war on me which was fantastic as I could put my Galeasses to great use blockading every sea tile from England down to Morocco. At that point I decided to commit myself to the war effort so Edinburgh built nothing but Galeasses and later Frigates for a couple of centuries. I must've destroyed 50 ships before I even built my first Man-of-War. The goal was completed around 1715 and after almost three centuries of naval warfare I signed a peace treaty with Spain, Portugal and France. Later I built a bunch of Man-of-Wars just to get the 25 ships goal out of the way also.
- I got the Aztec conquerors but not the Inca ones. I decided to keep Mexico City and another city north of it and Yax Mutal as the three I needed for the UHV goal. Yax Mutal built a few ships but for the most part these three were completely self-sufficient, providing nothing and taking away nothing from the rest of the empire. I used the conqueror units to fight the natives and get a bunch of slaves.
- In North America I settled a city slightly west of Halifax, Montreal, New York, Annapolis (Washington) and Chicago in that order. Only the first two were built by settlers from Dublin, the rest were built locally. I built lumbermills everywhere and as a result these cities ended up with very impressive production. They built some ships but like the Central American ones they were mostly self sufficient.
- In Africa I settled three cities in the south to get the total four for the goal - Cape Town, East London and Winburg. Winburg built a bunch of ships and some military units and Cape Town built the three settlers needed for Australia
- In Australia I settled the east coast - Cairns, Melbourne and Sydney
- In total Dublin actually only built 4 settlers (I expected I would do way more there but it was not needed) and ended up focusing on infrastructure (Bank, Wharf, Customs House etc.)
- With Centralism and a Manufactory London had the necessary production to build both the Bourse and the Trading Company without a great engineer. The Bourse helped us get another merchant which build the Stock Exchange to further help the economy.
- The Trading Company troops (as per the suggestion I waited until I had Replaceable Parts and Physics to finish building it) destroyed both the Mughals and Tamils in rapid succession. I stopped at seven cities but could've easily gotten more. That was the Asian UHV goal in the bag.
- The eight renaissance era techs race was close but I think I got to 10 of them first. France did beat me to seven of them I think and Arabia and Korea to a couple each
- Civic switch to Free Enterprise, Tolerance and Individualism helped our economy quite a bit
Ending:
- At some point in the early 18th century Portugal got their conquerors (normally they get it earlier but I was at war with them for three centuries which probably slowed down their tech rate considerably). I forgot about that and almost lost Winburg to them. Luckily I had the gold to promote some Arqebusiers to Riflemen and take them out but I could've lost the city with bad combat rolls.
- I also almost lost my first African city when I got involved in another war with Spain in the 18th century and their vassal Morocco came knocking at its door. Luckily I signed peace just in the nick of time or the city would have fallen.
- I got some really nice and unexpected tech trades with Korea (I probably got like 6 technologies from them in total) which only solidified my tech lead
- Shortly before the end we got another great engineer to rush the Bell Rock Lighthouse
- With Markets and Wharves in most of my cities and a super infrastructure in London the tech rate was already good before we hit the golden age that we got for 2/3 UHV goals. After the golden age it just went bananas and I was researching the early industrial era technologies in 1-2 turns each
- I discovered Biology as my 8th industrial era technology in 1775 just as Americans showed up to declare their independence. By then Chicago and Montreal both had Levees, Factories and Coal Plants and were rocking very impressive production so the Americans likely wouldn't last very long even if I surrendered Washington and New York for a bit
All in all this was the most fun UHV I've completed so far and I thank you guys for the great advice that helped me get there
