Allis was born in London. She is a freelance journalist and BBC broadcaster. She had a spell as a BBC Radio 4 announcer (1997), where she read the Shipping Forecast. She was also a network BBC TV announcer (1998 – 2000). For more than a decade, she was a regular voice on the BBC World Service, working in news, continuity and promotions.
Allis presented on LBC, and she was a news presenter/sidekick on Danny Baker’s BBC Radio 5 award-winning breakfast show. When Baker took over DLT’s BBC Radio 1 weekend morning slot, Allis joined the show in October 1993. She has contributed to both BBC Radio 4’s From Our Own Correspondent and Loose Ends. In 2016 and 2017, she was the official announcer at the AELTC Wimbledon tennis championships. She missed 2018 due to illness but will return to Wimbledon in 2019.

