Carbon film on ceramic substrate would be the way to go. A number of
asian manfs make them but the OP may have difficulty in locating a
distributor locally who carries 2W types.
Might not be... Metal or carbon films break down catastrophically with high
voltage, but solid carbon resistors don't, until much more is forced on
them. I found that out when making a limit resistor for a HeNe laser tube,
I ended up with 2W solid carbon resistors, 4 in series, wrapped in adhesive
lined heatshrink. It lasted for years, but previous experiments with metal
film AND carbon film types ended up like little fireworks in seconds, even
when selected for an apparent voltage rating that could stand the supply
voltage. My guess is the supply went high to ignite the tube, and having
started a burn, continued it even though tube ignition brought the voltage
within safe limits. Solid carbon doesn't care about that, it just works.
The OP didn't say why he wanted them, but my guess is similar high voltage
systems where the current path must be safely distrubuted through the whole
volume of the resistor.