MANCHESTER, England (Reuters) - Britain is worried by violence during a banned referendum in Spain s northeastern region of Catalonia but sees the vote as unconstitutional, Foreign Secretary Boris Johnson said on Sunday.  We are obviously worried by any violence but clearly the referendum, as I understand it, is not constitutional so a balance needs to be struck,  Johnson told Reuters.  We hope very much that things will calm down.  
ब्रिटेन कैटेलोनिया में हिंसा से चिंतित है लेकिन कहता है कि मतदान संवैधानिक नहीं थाः जॉनसन