Global immigration services firm Fragomen is to open an office in Dublin following an increase in demand for its services in Ireland. The law firm, which specialies in immigration work, says it is planning a 20 strong office within six months. The  Dublin office will be headed up by Bill Foster, a partner previously based in London. The Minister for Business, Enterprise and Innovation Frances Fitzgerald said the company is known globally for its expertise in providing immigration services to companies.'Fragomen's establishment here will assist FDI companies who are either relocating existing staff from abroad or sourcing new staff, in circumstances where immigration requirements apply,' the Minister for Business, Enterprise and Innovation Frances Fitzgerald said.  Fragamon has 40 offices around the world.