Luton Town have signed defenders Alfie Mawson, Joe Davis and Pelly Ruddock on loan from Brentford, Port Vale and West Ham respectively.
Ruddock, 20, joined the Hammers from Boreham Wood in 2011 and made his debut in the League Cup this season.
Davis, also 20, is a Vale academy product with 18 first-team appearances, but none this term, and is the son of Crewe boss Steve Davis.
The only senior game for 19-year-old Mawson came in this term's League Cup.
Ruddock and Davis are available to face Staines in the FA Trophy at the weekend, but Mawson is cup-tied.