By defeating them

I admit it's going to be hard if England conquers all of India. The goal was implemented before the conquerors existed, but with them in mind, so I guess it's worth being tested again.
Have you tried to edit it into the scenario files as a game option?
Playing as Ayutthaya I must say they are rather awesome. You get a useless UB (a solitary happiness given with Buddhist state religion doesn't do much when you have no happy shortage and you will ditch state religion for UHG1), and an almost useless UU (you can capture Pagan with it and that's it, but you could just load pikes on a galley). Did I mention that Secularism (via Shwedagon Pagoda) replaces the UP (except better)?
Alright, so with a fantastic civ with no UB, UU or UP what's the situation?
UHV1) get 8 OB's by 1650
UHV2) Make Ayutthaya the biggest city
UHV3) South Asia for South Asians
How to achieve
UHV1) rush optics and caravels to met Occidentals
UHV2) get enough culture for full BFC and trade for a couple resources (I admit I was very lucky getting the artist event yielding 450

2 turns in)
UHV3) *mumble mumble*
So I was minding my own business and then I saw Vicky using Redcoats on Mughals in 1675, being a diplomatic type I decided to say nothing. Later in 1802 a Merchant of mine was conducting business in London enriching the kingdom, he decided to take a stroll and saw bright rows of freshly polished Artillery glistening in the crappy English weather, he also visited the Thames and saw the amazing levees there. In 1823 when the Republic of Thailand invented her own steam engines the President naturally wanted some levees to reclaim more land for the capital, sadly he was informed by his cartographers that the
Chao Phraya River running through Bangkok couldn't feature levees due to the River of Kings not being on the map... In 1832 when another Merchant arrived in London he saw rows of Infantry in crisp khaki uniforms drilling away in the still terrible English weather, so much for catching up and driving out the Occidentals... In 1848 a Merchant attended the opening of Wembley Stadium which hosted this strange Occidental sport called "Football", in 1850 this same merchant visited London for business a viewed these things called "manufactories" which produced many good (powered by these rocks called coal), the Electrification of the streets impressed him greatly. In 1852 the President in his goal of helping Asia gave a massive transfer of technology to Ming China in exchange for some coal rights for his new locomotives.
Not sure why I lost though (congresses assigned the European cities back to natives).