Green’s Dictionary of Slang

Crockford’s gambling club, 50-53 St James’ St, W1.

1828		‘A Flat Enlightened’ Life in the West II 34: From Fishmongers’ Hall, through other gaming-houses, down to the lowest pot-house, all exhibited a busy scene.
1828		‘A Flat Enlightened’ Life in the West II 38: Lord Hulse, Mr. Friske, M. P., and Captain Welldone cleared upwards of four thousand pounds [...] What the spiders of the ‘Hall’ netted by the transaction must be left to be guessed at.
1831		Satirist (London) 23 Oct. 229/3: There is an underground entrance to Fishmongers’ Hall, to which a certain classical member has given the appellation of Descensus Averni [i.e. the descent to Hell].