The two smaller railways became the newly established Northern Division of the GWR .
On 1 September 1854 , the S&CR and S&BR amalgamated with the Great Western Railway ( GWR ) , whose locomotive workshops were at Swindon .
The two smaller railways became the newly established Northern Division of the GWR .
On 1 September 1854 , the S&CR and S&BR amalgamated with the Great Western Railway ( GWR ) , whose locomotive workshops were at Swindon .