the powers to strip citizenship were initially very rarely used. between 2010 and 2015, 33 dual nationals had been deprived of their british citizenship. in the two years to 2013 six people were deprived of citizenship; then in 2013, 18 people were deprived, increasing to 23 in 2014. in 2017, over 40 people had been deprived as of july (at this time increased numbers of british citizens went to join "islamic state" and then tried to return).