If you are responsible for the telephone exchange at work in the U.K it is worth noting.
The 192 directory enquiries service is being replaced with new numbers starting 118-???
Because these are the same as directory enquiries they are prem,ium rate and if you barr the directory enquiry service you will have to barr all 118 numbers.
Just a fore warning because one of the jrs here sussed it out and has been using it.