This is doing my head in !!

Ive been in the garage, smacking HELL, out of the bearing on the shaft (equaly on both sides)
and the little f***** will not come off, so is it mr angry grinder time now ??

Turn the power down on a plasma cutter, fabulous for removing bearings,Oxyacetylene next best, otherwise use a cutting disc on an angle grinder.

Boil a kettle, make a cup of tea, then pour the rest of the boiling water on the bearing, before smacking it with the hammer again. Hopefully the hot water will expand it slightly. Works for ball joints, might work here too

To remove mr angry, as you get close to the shaft the metal will overheat quickly under the disc so you can see when to stop, you should only need to get 'one flat' and the whole thing will slide off easily.

run a bead of weld around it will fall off

as previous a bead of weld then a tap with the hammer

First thing is you need to split the retaining ring with a chisel or as others have said a quick bead of weld, as the heat will expand it.

Then wrap the bearing in a clothe and whack it with a hammer and the outer casing will break and and the beraings will fall out exposing the inner bearing race. Run a bead of weld on that bit and it will come off.