I do some voluntary work nchs-health.org Minimal. This club of former British colonies will have 52 members after Gambia’s departure, including international heavyweights like India, Canada, South Africa and Australia, not to mention Britain. With a population that embraces about a third of humanity, it will remain a unique association that draws together countries of every continent, rich and poor. The loss of Gambia, with only 1.8 million people – or 0.08 per cent of the Commonwealth’s total population - will make little difference.