My options were £700 and Cat-C the car, or a cash-in-lieu payment of £600 without writing off the car, which avoids that being put on its record and I don't have to have an MOT and VIC done after the repairs. So I opted for that. I pulled the car to pieces this evening, and discovered a needs a new bonnet (obvious) but also a new grille and n/s headlamp.
Going to the scrapyard tomorrow to pick up a bonnet (£25), and I've got a headlamp to pick up as well (£6). I will try and get the grille from the scrap car.
The damage, taken at the scene of the accident:


Here's how she's looking at the moment:

Unbelievable amounts of hassle that I could do without, but I'm really glad I didn't have to scrap her!