A British backpacker allegedly killed a father after ploughing into him while riding drunk on an e-scooter, an Australian court has heard.

Alicia Kemp, 24, potentially faces up to 20 years in prison after she was arrested and charged for allegedly riding the hired e-scooter on a footpath and knocking down 51-year-old engineer Thanh Phan, 51, who died of brain injuries following the May 31 tragedy in Perth, Western Australia.

Kemp was told by Perth Magistrates Court that she could not be bailed out as she posed too great a flight risk.

The court was told that she was in Australia with her partner on a four-month tourist visa and that she had been working at Durty Nelly's Irish pub in Perth since arriving.

She had been out drinking on Saturday afternoon from 2.30pm with a friend, who was kicked out of a bar for being too drunk.