Bronca would be liable for only costs relating to the breach of the covenant not to use the premises for anything other than residential purposes because this covenant was in the original agreement

Bronca would not be liable at all under her Authorised Guarantee Agreement because the agreement was subsequently amended

Bronca will be required to pay £50,000 to remedy both of Manny's breaches

Given that the landlord became aware of the breaches more than six months ago, Bronca would not be liable for them at all, as they are fixed charges under Section 17 Landlord and Tenant (Covenants) Act 1995

If Bronca is asked to remedy the breach and the landlord decides not to forfeit Manny's lease, Bronca is discharged from liability if Manny breaches any more obligations in future