Should unpronounceable Welsh street names be used in English speaking areas of Wales?

The BBC has recently highlighted Welsh language problems - and has probably enjoyed doing it. However, having unpronounceable* Welsh street names can be a big problem for house owners ordering items on the telephone who have to spell out their address time and time again and year after year - to say the least, it causes problems at the other end.

The question arises: 'Should pronounceable* street names be given to addresses in Neath, which is an English speaking town?

Here is the most recent report from the BBC, which highlights translation problems.

*  To the average English speaking person.