5Deg wrote

I have 3 EAP-110 access points spread over the area of my house however they are on different SSID which means I have to manually switch from one to another,

That's not a mesh network, but simple roaming. Just set all three EAP to the same SSID.

I would ideally like them all to be on the same SSID however when I have tried that in the past then I find I am still on one with a poorer signal when I am closer to a better positioned one.

 

Client devices decide for themself when to switch-over to another AP. If the AP they are locked to still provides a good signal, they won't switch over to other APs even if they have the same SSID. Such a switch-over could be forced through Fast Roaming, but AFAIK Fast Roaming is not (yet?) available for the EAP110, only for EAP225. Note that I haven't checked latest firmware for newest EAP110 hardware, still use EAP110 V1 here, so YMMV.