The first place to go is the WCC records for Cemetery burials. You can search these details via their cemetery search website via the below link:
Here you will find out whether your relative was buried or cremated and if buried, the specific location of the plot.
The WCC are developing a new way to find plots via GPS tracking. For the present, we are aware that finding plots can be somewhat challenging, especially old ones. The Friends are more than happy to help you find plots. We can provide you with detailed instructions and maps to support this. Please contact us via email firstname.lastname@example.org and we will assist. On our open days, we will have people available at the Cemetery who can assist with finding plots. See our Events calendar for details.