Client Bridge - Serviio not visable

My setup is a DD-WRT router with a 2x PC wired plus multiple media devices. All devices can see both versions of Serviio and work perfectly.
I've added a tv wired connect to a DDWRT router in client bridge mode. The tv is connected to the network and internet, iPlayer works fine, web browsing etc.. all works so the wifi bridge works. I can access both routers from my PC so the DNS appears to be working.... However the tv cannot see either versions of Serviio (or Plex for that matter). I've followed the guide on DD-WRT exactly for the config of router 2.
The basic config is as follows:
Router 1 = 192.168.1.1, Subnet 255.255.255.0 with DHCP ON, firmware 21286
Router 2 = 192.168.1.2, Subnet 255.255.255.0 with DHCP OFF, firmware 21286
Both routers had the 30/30/30 treatment prior to flashing so are clean.
The TV picks up the network fine, it reports its DNS server and gateway as 192.168.1.1 as expected.
Serviio on both PC has its IP bound and works before the client bridge. I'm struggling to think what else to check or change so that Serviio works, given that the internet and other services do work.
I've added a tv wired connect to a DDWRT router in client bridge mode. The tv is connected to the network and internet, iPlayer works fine, web browsing etc.. all works so the wifi bridge works. I can access both routers from my PC so the DNS appears to be working.... However the tv cannot see either versions of Serviio (or Plex for that matter). I've followed the guide on DD-WRT exactly for the config of router 2.
The basic config is as follows:
Router 1 = 192.168.1.1, Subnet 255.255.255.0 with DHCP ON, firmware 21286
Router 2 = 192.168.1.2, Subnet 255.255.255.0 with DHCP OFF, firmware 21286
Both routers had the 30/30/30 treatment prior to flashing so are clean.
The TV picks up the network fine, it reports its DNS server and gateway as 192.168.1.1 as expected.
Serviio on both PC has its IP bound and works before the client bridge. I'm struggling to think what else to check or change so that Serviio works, given that the internet and other services do work.