While Singapore is definitely has a huge financial capital sector that is on par with Hong Kong, it isn't completely reliant on it like Hong Kong nowsdays. We are still very much reliant on our port, manufacturing industry in Tuas and Jurong. The real backbone of Singapore is more likely our state owned industries and our GIC. Especially Temasek Holdings.
Also immigrant slavery is fucking stupid. This isn't UAE-tier exploitation here. Your sources of labour being in Phillipines and Indoensia and India, instead of Bangladesh, Malaysia or even mentioning the actual #1 China, is just proof that you heard horror stories of maid abuses over here. Don't get me wrong, migrant abuses probably exist here, but Singapore is not solely leeching from these foreign workers. If anything Singapore is needlessly expanding the workforce from other another migrants, the infamous foreign talent. FTs are taking over skilled jobs by undercutting locals far more than foreign workers are undercutting locals in unskilled labour (since no one wants to do it). This effect is called the bifurcated labour. Also Singapore is dragging out elderly and mentally handicapped into the workforce. Foreigners are being exploited and being used to exploit the workers, not made into fucking slaves.
Also the Singapore on the Thames is fucking retarded. The whole point of Singapore being a financial capital is that it is a gateway to SEA and Asia, and leaving EU will only make UK more isolated from one huge trading bloc. We are seriously so reliant on Malaysia as our 'rural area' with our borders and flights between our capitals being the most saturated in the world. If Malaysia disappears tomorrow, we are screwed and vice versa. UK is essentially making itself alone while looking to a country that physically isn't.
What you would get is constant outsourcing and dilution of labour that is slowly already happening here as described above, which would suck about the non-cities areas that voted for it. 33% of our population are migrants. Our population density is ridiculous high. And there is already a Singapore on the Thames, it is fucking called London. Financial capital, high amount of immigrants. Hell our islamic population is also way higher.
If non-Londoners hate London so much why are they so fucking dumb as to want to make UK more like London? The fucking irony is not lost on me. Fucking morons deserves whats coming to them if they vote Tory