|Date of birth:||13 November 1987|
|Height:||175cm (5' 9")|
|Weight:||77kg (12st 2lb)|
Allinson initially joined Bath Rugby on a short-term loan in November 2016 from London Irish, before signing a full contract to move to the West Country ahead of the 2017/18 season.
In five years with the Exiles, the scrum-half made over 120 appearances following a move from his native Wales, where he played for Cardiff Blues.