Yes, you can do it with the Thomson but it looks like the Netgear won't work.
Having looked carefully through the settings possible on the Thomson I do not see any way to do it. I preume that I would have to setconnection type as PPPoE and find some way of altering the settings to enable PPPoe in other places, this is just not possible even changing everything possible the connection type is still set as PPPoA in the firmware.
On the other hand the Netgear, and bearing in mind what Andrew has said about the dgn1000 and its capabilities I can see ways of dealing with this but would very likely have a router that was just not up to the job.. So I do have a choice of setting the connection type as PPPoE and in the WAN setup there is a tick box that says Enable PPPoE Relay and in the description of what this does it says "When enabled , this feature will allow a PPPoE client on a local PC to connect to a remote PPPoE server with the gateway acting as a relay agent " which to me is a pointer to the router looking for the connection on the ethernet sockets. But then again I could be completely wrong and would not be surprised if I was.
What I do not want to do is to order an FTTC connection and to find that my equipment will not work and then have to wait several days for delivery of a router that will cope. I would sooner risk buying the recommended equipment and then finding out that what I had would have done the job. However, if I can be sure that my equipment will work I would be much happier not wasting the £50.