Just been in town and at around 11:30 - 12:00 and the bells where ringing and there was a ton of people crossing from Cutlers I think, one woman had a big chain round her neck, might have been the Mayor, not sure, but there was a ton of police and mounted cops too, anyone know what was actually happening???

Was this she?

Lord Mayor (http://www.sheffield.gov.uk/your-city-council/lord-mayor)

Maybe the installation of the new MAster Cutler?

It was a service to mark the installation of the master cutler which was btw the first major service presided over by the new dean, peter bradley who was installed on sunday afternoon