Does anyone know this number?

[Radley]

Does anyone know the 3 or 4 digit no you put before a phone number when dialling out so that your own number is shown?

Do you mean your own number isn't shown?
141 AFAIK?

141, I think.

Do you mean if your number is usually witheld? Its 1470

Thanks pepperpots, that's the one.

I should have said my no is withheld. Duh!