Celebrity Race Across The World has revealed its complete cast, featuring radio and television host Roman Kemp alongside former Strictly Come Dancing contestants Tyler West and Molly Rainford. Following the reveal on The One Show, the four celebrity pairs have been confirmed, with Tyler and Molly, who recently announced their engagement, competing against Roman and his sibling Harley Moon. They'll face off against Derry Girls star Dylan Llewellyn and his mother Jackie, plus Anita Rani and her father Bal. "I can finally say it!" Roman announced on The One Show. "It was high octane, it was the scariest thing I've…