The main sources used in the investigations for those who lived in England, Wales and Scotland will be the records of: -

Family Sources
General Registration
Census Returns 1841-1911
Parish Registers
Non-Conformist Registers
Probate

The information revealed about your ancestors in these sources may be supplemented by searches in

Newspapers
Commercial Directories
Service Records

and a variety of other records where relevant to the research. Where possible, copies of the material, which documents the lives of your ancestors, will be made.