I've got two mondies, one with self adjusting (y reg) and the other has an adjuster (52 plate). THE ADJUSTER IS WHERE THE TWO REAR CABLES CONNECT TO THE ONE FRONT SINGLE CABLE. You have to drop the exhaust of it's rubbers so it hangs down then unscrew the heat shield above the center box and the adjuster is there (what I would do is to unscrew the heat shield by the center box first before dropping the exhaust, get a tourch and see if you can see the adjuster,if you carnt see the adjuster then dont bother going any further) as said if you carnt see the adjuster then it will be the self adjuster type, then you will require two new handbrake cables, this will solve your problem.
You say the water showed no sign of having oil in it before the bump, where abouts is the oil filter? does it have a oil cooler around the top of the oil filter? if so and it's at the front of the engine then may the cooler cracked on the impact hence mixing the oil/water.
NO they both work of one pump, ie it goes one direction to work the front washers and the other direction to work the rear washer, fraid it's a new pump for you then, as said earlier it's not a bad job to do,
by the drivers wheel, you have to remove the plastic wheel arch trim at the front end not completely just enough to get your arm through in order to reach the washer bottle, the washer pump is only pushed into a rubber grommet and should just pull out with a waggle. note there may be a few different connectors for the electric plug on the pump and when removing the water pipes remember which is which, once the new pump is fitted try it before refitting the wheel arch trim.
I've been looking for one on flebay as mine has also packed up.
Have to agree with Stef, imagine the extra cost the garage is going to charge to sort out the snapped plug or the recovery charge to get the car back home so you can have a go at removing the snapped plug yourself.
get a small screwdriver and scrap all the crap from around the bottom of the plug, use a paint brush(or an air line) and brush/blow all the carp away, soak the plugs in wd40 and then have another go at getting them out, once you've got them moving, do about 4 turns out 1 turn back to clean the thread till you get them completly out