At the same time, Jones is bringing in three senior managers from his former agency.
Twenty Twenty won the Carmen Media Group's portfolio of online casinos, which includes Jackpot City Bingo, Jackpot City Casino and Gaming Club Casino, from former agency WFCA. The agency secured the account without a pitch.
In addition, the agency won the account for new e-card retailer Purple Hoot, again, without a pitch.
The two client wins will bring the agency's billings to more than £8m, according to the agency, who landed its first clients Zavvi.com, thehut.com, Raymond Weil and TW Steel in September.
Jones, who launched the agency in July, has appointed Jon Cook, his former media deputy media director at WFCA, as client services director. Cook who worked on accounts including Bathstore, The Perfume Shop and BML at WFCA will also be responsible for media at Twenty Twenty. He previously worked at MEC as business director and board director at Carat.
Steve Sworder, WFCA head of broadcast, also joins Twenty Twenty as broadcast director and will be responsible for all TV and radio negotiation, campaign planning and implementation.
Del Randhawa has joined the agency as enterprise director, with a focus on developing new marketing and distribution channels, generating new revenue streams and improving marketing effectiveness. He was previously media account director for two years at WFCA.