A new index reveals the best and worst places in the world to be a girl - and the UK doesn't make the top 10.

Sweden ranks best for girls out of 144 countries, based on rates of child marriage, schooling, teen pregnancy, maternal deaths and the percentage of female MPs.

The UK comes in at number 15 behind Denmark, Norway, Slovenia and Italy, while Niger ranks bottom in the index, compiled by Save The Children.

Britain’s position reflects low female representation in parliament and a teen pregnancy rate of 15.3 per 1,000 births.

Save The Children released its report, based on 2015 figures, on the International Day of the Girl (11 October) to highlight the extent of child marriage across the world.

One girl under 15 is married every seven seconds, according to the analysis, with girls as young as 10 forced to marry men in countries including Afghanistan, Yemen, India and Somalia.

Revealed: the best and worst places in the world to be a girl