Some kind considerate idiot has dinked the front of the car today whilst it was parked.

Damage looks fairly superficial initially but I need some advice please, as I am almost useless at bodywork stuff.
Car is the mini facelift Elite pictured left

The damage is all to the front bumper area:
1. easy - 3 small dents that will not be hard to dress out prior to respray the bumper
2. rubber insert (between headlamp washers/bumper) split - requires replacing
However ... there is always one of these ......

What looks to me like a bracket that the insert attaches to, right at the rearmost end is also broken, this bracket seems to go forward and round under the headlight. At the moment the bumper/insert is "bodge-taped" up as without this bit of bracket there is nothing to attached the insert to.. and the bumper attaches to the insert
Is this bracket easily replaceable ? does the whole bumper have to come off to get to it ( looks like it to me ...)? how easy is bumper removal/replacement ? are there any other bits I need that I don't know about ?? are the bumpers/inserts the same on facelift/minifacelifts ?
I'll be putting a "wanted" up and e-mailing those folks breaking cars, but would appreciate any comments before I do !!
Regards ... a very p*ss*d off entwood