The sector returned 34%, compared to the average investment company return of 14%.

The trade body revealed that companies in the environmental sector returned 30%, taking second place.

In third place came the UK All Companies sector delivering 27%, closely followed by the UK Smaller Companies sector with 26%, showing that the UK was a rewarding region for investors despite the political uncertainty.

The table below show’s the top 10 performers in the year to 30 November:

Annabel Brodie-Smith, communications director of the AIC, said: “Political uncertainty, trade wars and worries about an economic slowdown have been on investors’ minds all year. So it’s good to see the average investment company delivering a healthy 14% return.

“Despite the lack of clarity surrounding Brexit, the UK sectors have delivered strong returns. And as more investors have become interested in ESG investing, it’s encouraging that the Environmental sector has performed well, with a return of 30% since January.

“Although it’s always interesting to look back at the best-performing companies at the end of the year, it’s important to remember that investing should be for the long-term and past performance is not an indicator of future returns.

“Investors need a balanced portfolio and the investment company industry offers a broad variety of sectors, regions and risk profiles to match these needs. Investors should also consider their objectives and the level of risk they are willing to take when looking at potential investments and, if they have any concerns, should speak to a financial adviser.”