Thanks - I've purchased the ASUS RT-AC3200 - will see how it goes.

What have you got for the DSL sync?....that is a (cable) router and I think the BT smart hub 6 cannot be run in bridge mode.

According to the user interface menus, the BT Homehub 6 (BT Smart Hub) has been designed to work with most virtual private network (VPN) software. I assume you have signed into the user interface at the 192.168.1.254 IP address. The advanced settings include a page for VPN, So click on advanced settings. Then, navigate to the Home/Advanced Settings/Broadband page (admin password required). Next, click on the VPN tab.

Thank you bob_lucas, I thought I�d seen it lurking in there somewhere.

Bob,
the Homehub 6 works well with a VPN located on the local LAN, mine is running on one of my Synology NAS boxes (a DS1812+). What the OP is asking for however is a router or router/modem that itself includes a VPN rather than simply having the ability to connect an external user to a VPN on the internal LAN.