Magnetic skyrmions are vortex-like objects characterised by an integer topological winding number. They have been observed in the spin structures of several magnetic materials and it was recently demonstrated that skyrmions can be stabilised at and above room temperature in members of the the beta-Mn-type Co-Zn-Mn series. The discovery of skyrmions in this system is important as it shows that the SL can be stabilised at or above room temperature and that this phase can be tuned by changing the Mn doping concentration in the CoZn matrix. We have recently demonstrated that muSR is a promising method for exploring skyrmions and their slow dynamics. Here we propose to complement our investigation of the slow dynamics in bulk Co8Zn8Mn4, along with our related thin film measurements, by measuring additional compositions of the Co-Zn-Mn series.