Gail grew up in the North East of England. She came to the Lord at the age of thirteen at a youth camp. After completing her theological training at Northumbria Bible College, she felt a call for missions. In 1990 she left for Costa Rica for language training and in 1991 to Bogota, Colombia. Having been born in Colombia into a Christian family Daniel felt the call to serve the Lord since he was in his early teenage years. In 1987 he enrolled the Seminario Biblico de Colombia, a theological Seminary founded by OMS. In 1991 he finished his studies and went to work in the Christian Fellowship church in Bogota. There he met Gail and got married in 1993. Daniel and Gail served in Colombia with OMS for 16 years in Church Planting, Bible Training, worship and Social Ministries. In 2007 they returned to the UK for home assignment and a period of further Theological training. After completing their studies, they felt God directing them to work in Spain where OMS has been serving since 1972. The Castros share a passion for presenting God’s message in challenging and relevant ways and a commitment to church development and the training of Christian leadership. Changes led them to return to the UK in 2022, where they continue to serve with OMS in Member Care as well as supporting ministries and local churches in the North West of England.