Hi Jane Ann
It is better if you can check the probate calendars to make sure there is a will before making an application.
The probate calendars 1858-1941 (except for a few missing years) have recently been put online at Ancestry but you will need a subscription. If you don't have one, check your local library to see if they have access to Library Edition which you can access for free at your local library.
Once you have seen the relevant entry in the calendar, make a note of the full name, the date of death, whether it is a Probate or Admon, where it was proved, and the date it was proved.
Copies cost £5 and you need to send your application to York
There is more info here
http://www.hmcourts-service.gov.uk/cms/1226.htmMost wills are proved within 5yrs from death but some do take longer.
Dawn