He made his first team debut in Gloucester's Anglo Welsh Cup match against Bristol, which Gloucester won 34–6. Allen scored his first try for Gloucester in their 106–3 demolition of Bucuresti. His first Guinness Premiership try came 2 weeks later against Leicester at Welford Road.
Allen made his first team appearance in a Gloucester Anglo Welsh Cup match against Bristol, where Gloucester won 34–6. He scored his first try for Gloucester in their 106–3 victory over Bucuresti. His first Guinness Premiership try came two weeks later at Welford Road against Leicester.