In the wake of the Brexit campaign, optimistic economists and politicians held Singapore as a prime example of the exponential success that could be achieved when breaking away from a bigger union.
In other words, the simplistic view is that Brexit = Singapore's separation from Malaysia in 1965.
The "Singapore model" has been upheld so much that Prime Minister Theresa May even threatened the European neighbours that they'll transform into a Singapore-style tax haven should Europe refuse to give UK a favourable trade deal. By severely slashing taxes, Britain's veiled threat is to get a huge leg up on its former European Union partners by stealing foreign investment.