Driving along early quite normally, went to put it into fifth, and all i felt was this grind from the gearbox, apparently its the planet gears which have fucked and cracked the casing

. I wasnt thrashing it either and there was no grinding or whining noise before hand to give any indication that it was going to blow.
It went bang about 3 and had it out by 6. Now just need to find a new one and rebuild it

.
The joys of cars eh?