The United Society of Drillers catered for shipbuilding drillers in London. It merged with the Shipconstructive and Shipwrights' Association in 1908.
A full list of members transferring to the new union appears in the fourth 1908 quarterly report of the Shipconstructive and Shipwrights' Association (MSS.192/AS/4/2/15). Name, age, address and branch transferred to are listed.
The membership register of the Shipconstructive and Shipwrights' Association covering 1908 (MSS.192/AS/5/1/4) also includes details of all transferring members. Information includes name, date of joining, date of death, age, place of birth, marital status, wife's name, wife's age, employer, number of years at trade, employer with which apprenticeship served and length of apprenticeship.