I think that was speculation, but the actual 2016 figures showed recently that Britain (and France) was still quite a way ahead of India
Of course India will overtake us in the coming years, but that's just the industrialisation of the (former) third world. Japan is dropping relative to the rest because it's no longer pursuing growth so aggressively, and France doesn't grow as quickly as the UK because its more socialist.
Cant let that one slide - "France doesn't grow as quickly as the UK because its more socialist" - Germany are also more socialist and have a higher growth rate graph it here: http://www.tradingeconomics.com/united-kingdom/gdp-growth