The Birmingham 70cms repeater, GB3CB now has ports on 29 and 70MHz. The idea has been to enhance local activity on the two bands.
The 29MHz port is on 29.530 and the 70MHz port is on 70.3625.
Rather than utilise a repeater shift, it looks like all you need to do is to transmit and receive on the port frequencies above.
I occasionally hear GB3CB from home on 433MHz, so it will be fun to see if I can hear anything on 29.530 when I'm driving around.