E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
British Lion (The).
The pugnacity of the British nation, as opposed to the John Bull, which symbolises the substantiality, solidity, and obstinacy of the people, with all their prejudices and national peculiarities.
1
To rouse the British Lion is to flourish a red flag in the face of John Bull; to provoke him to resistance even to the point of war.
2
To twist the lions tail is a favourite phrase and favourite policy with some rival unfriendly powers.