Britain's first leap year quadruplets are celebrating their 'third' birthday this week - 12 years after birth.<br /><br />Reuben, Samuel, Zachary and Joshua Robbins were all born within six minutes of each other on February 29, 2012.<br /><br />They celebrate their birthdays on March 1 each year but, every four years, get to mark the 'real day'.<br /><br />But dad Martin Robbins, 50, says they are still finalising their plans for 2024 - as each child wants to do something different.