Bees must become city dwellers to in order to survive, according to a new study which found the insects now fare better in towns. 

Scientists compared the progress of colonies in urban, village and rural environments and found numbers are roughly three times healthier in built-up areas than in the country. 

The researchers at Holloway University believe predators, agricultural pesticides and a reduction of food in rural areas mean city gardens and other green spaces have now become safer and more nutritious for bees than their traditional habitats. 

The crucial pollinators are under significant strain, partly due to the intensification of arable farming. 

But there has been an increase in the number of urban beehives as more people take up beekeeping as a hobby.