The general rule is to cut out the canes which have fruited this and tie in this year's canes which will fruit next year.

Unless they are an autumn fruiting variety in which case you wait until next February early March to cut out the canes that have fruited. New canes will grow to provide that years crop. In spite of the claim that you don't need to tie in autumn rasps. my experience is that you do.

Thanks so much for the help. xxx