phodgkin
There's one large building, with multiple doorways (most without numbers), so I suspect everybody is right! 49 was based on Salvation Army website, but FHRS data has 48. Interestingly the building is II* listed under "Salvation Army Citadel, 47-48 Saddler Street"! Have adjusted to 48 since this matches the uncontroversial data (the 49 taken from a large organisation's website is more questionable).