The reformer is Luther, losing capital gives UTHER, writer is PEN and to never seem to stop is to DRAG ON. Put them all together gives UTHER PENDRAGON who is a legendary king and father of King Arthur.
The Welsh town is Llanelli, endlessly gives LLANELL, to contest is to VIE. Put one inside t’other gives VILLANELLE – which is a type of poe
An anagram (“doctor”) of SAVES NHS INK gives KNAVISHNESS – perhaps double dealing