Well, if the pipework to the rad is getting hot, you at least know that the rad has a hot feed from the boiler. If the rad is not getting hot at all, you need to open the lockshield valve (silly but it's worth a check).
Try that and let us know.
Open the TRV to full as well, otherwise you won't have any return flowing.
You will eventually need to swap the valves round though.
As I said earlier, your rad should still get hot.
Thats why you needed to make sure the lockshield was fully open.