| 1943 to 1947 | His Majesty’s Forces serving in the Royal Signals in India and Burma (now known as Myanmar) it was whilst in imphal Burma that Leslie became aware that there was a God and his subsequent relocation to Bombay (Mumbai) led to his responding to the call of God as a result of the preaching of the Gospel in the main street. |
| 1947 to 1949 | Trained as a Watchmaker & Jeweller and opened His own business |
| 1949 to 1951 | NYLC College St Andrews Surbiton Surrey including work as a South East Counties Voluntary Evangelist and also an Itinerant freelance Evangelist. |
| 1952 to 1953 | Oxford Railway City Mission & Itinerant Evangelism |
| 1954 to 1957 | Formation of Knowle West Evangelical Church - Bristol |
| 1958 to 1959 | Youth Worker at Pilgrim Hall Bretheren Assembly - Lincoln |
| 1960 to 1963 | Director of Exeter City Mission |
| 1963 to 1966 | Longford Hall Mission - Salford (Manchester City Mission) |
| 1967 to 1970 | Victoria Dock Mission London - The Shaftsbury Society |
| 1970 to 1973 | Hosier Street Chapel - Reading (later to become Central Evangelical Church after the redevelopment of Reading town centre) now Carey Street Annex Formation of Christian Youth Outreach |
| 1973 to 1974 | Hebron Evangelical Church (a home fellowship) - Reading |
| 1974 to 1978 | Bodmin Road Church (Evangelical) - Hull |
| 1978 to 1981 | Director of Leeds City Mission |
| 1981 to 1984 | Whyteleafe Evangelical Free Church - Surrey |
| 1989 to 1992 | Northallerton Evangelical Church |
| 1992 to 1999 | Orchard Park Evangelical Church - Hull |
| 2018 | Hallgate Residential Home - Cottingham "Called Home to Glory" |
The Ministry of Rev. Leslie C. Smith
