Alex Batty expected to fly back to the UK later on Saturday

Alex Batty was 11 when he went missing with his mother and grandfather (Family handout/Greater Manchester Police/PA)

British teenager Alex Batty is expected to return to the UK later on Saturday, six years after he went missing with his mother and grandfather during a holiday.

The 17-year-old was just 11 when he disappeared with mother Melanie Batty and grandfather David Batty on a family trip to Spain in September 2017.