You will lose your ncb but you will have to declare an accident which will push the premium up a bit. You'll need to re negotiate your renewal as far as I'm aware.
Trouble is you dont know what the extent of the damage actually is - if the crash bar is damaged it'll need replaced too, probably not at low speed but insurance work is priced phenomenally. 1K may not be far off what they'll charge to repair - privately a couple of hundred
Trouble is you dont know what the extent of the damage actually is - if the crash bar is damaged it'll need replaced too, probably not at low speed but insurance work is priced phenomenally. 1K may not be far off what they'll charge to repair - privately a couple of hundred