Or baldrics link could inform you that
"Will a Non-Fault Accident Affect My No Claims Bonus?
Following a non fault accident no claims bonus allowances will generally be lowered. Not as seriously as if you make an accident that is your fault claim car insurance firms will always levy much harsher penalties against your no claims bonus if he accident was your fault. It is important to note that following a non fault accident excess damages being paid by yourself out of your own pocket, will not prevent your no claims bonus from being damaged."