In reply to Steve John B:
No reason why not. My surname is double-barrelled for similar reasons. My father had been married previously, and my mother had the delight of meeting said ex.
She refused point blank after that to take the same name, and my father, being of the old-fashioned mentality was never going to take her name!
Now, I still keep my name, makes not the blindest bit of difference to me. A name is a name, after all. My youngest sister is of the same opinion.
My brother has shortened his name un-officially, for simplicity's sake, but still has the full double-barrel elsewhere.
My other sister however, revels in her surname, and uses it mercilessly for any advantage. But then she is of the 'keeping up with the jones' crowd!!