According to my paeditrician at Mount Alvernia. He mentioned that so long as the child is under 5 years old, they just need about 2 doses. But I haven given my kids the vaccination.
This vaccination is for baby from 7, 9 and 12 months old (3 doses).
Its better to check with a child specialist for more information.
However, if you feel uncomfortable, you should just follow the UK way to avoid complications and confusion.