PfSense transparent bridge with IPSec remote access

I need some help with a pfSense firewall. To give you an idea, here is the setup at the moment:
ISP Gateway———pfSense WAN———pfSense Bridge———pfSense LAN——Servers with public IPs

We are using pfSense to bridge a public IP block to the LAN where we are running a number of VMWare servers.

What we now want is to create a IPSec tunnel from our office to the firewall to allow access to the servers (and then lock down public access for only certain ports etc).

I've created the IPSec tunnel and it seems to establish fine but I cannot get any traffic to run from the office LAN to the servers. I think this is because the servers run with a gateway address of the ISP gateway so I need some way for pfSense to intercept and redirect the appropriate traffic across the VPN.

Is this something you could help with?

Many thanks,

Pete