Omega Seamaster Planet Ocean 2011, Links

Hi Ive been given the watch by my dad, however the bracelet is a little snug, well quite snug. Im struggling to find links for the bracelet, this watch is from between 2009-2011 with push bars instead of the screw type link. can anyone reccomend where i can find one or possibly two please? and any tools that may assist removing the pins as the tools i have are far to big. Many thanks . BTW im in the UK