Luton Town have confirmed the signings of free agents Mark Onyemah and Charlie Walker.
Former Thurrock left-back Onyemah, 19, has penned a two-year contract with the League Two side.
Meanwhile, 24-year-old striker Walker has signed a one-year deal.
Walker scored 43 goals last season for non-league Peacehaven & Telscombe.
Luton have now brought in nine new players ahead of the 2014-15 campaign.