Despite a resurgence of effort over the last decade in the area of massive stars there is still ambiguity over their evolutionary path , contamination of their surface abundances and the behaviour of their stellar winds . Here 10 SMC B-type supergiants are analysed applying a unified model atmosphere code fastwind to intermediate resolution spectra from the ESO Multi Mode Instrument ( emmi ) on the NTT telescope . Combined with the 8 targets analysed in paper 1 ( Trundle et al . 2004 ) , this work provides observational results on the properties of the winds and chemical compositions of B-type supergiants in the SMC . This paper emphasizes and substantiates the implications for stellar evolution from paper 1 ; that current theoretical models need to produce larger degrees of surface nitrogen enhancements at lower rotational velocities . In addition a significant discrepancy between theoretical and observed mass-loss rates is discussed which will have important implications for the rotational velocities obtained from stellar evolution calculations . Furthermore , an initial calibration of the wind-momentum luminosity relationship for B-type supergiants in a low metallicity environment ( Z = 0.004 ) is presented .