Oxford and Simpson Realty Services, Inc. is proud to announce Alliant Insurance Services has joined a roster of quality tenants. They signed a lease at 2 Jericho Plaza, Jericho, NY 11753.  Alliant Insurance is one the nation’s leading providers of diversified insurance products and services. They offer a comprehensive portfolio of services to clients including risk solutions, employee benefits, industry solutions, co- brokered solutions and business services.