If you have any difficulty in dealing with the deceased's property, possessions or guardianship of their children, get advice from a solicitor or Citizens Advice Bureau as soon as possible.
From the CAB (or their website) you can get the leaflets Legal Aid Guide and Getting Legal Help from a Citizens Advice Bureau, public library, police station or a court, to find out if you can get legal aid.
These places also hold a list of local solicitors which shows whether they take legal aid cases and if they specialise in probate work. Again you can search for local solicitors using the On-line Yellow Pages. Go to the Yellow Pages website
The Legal Services Commission Website also contains leaflets and other useful information.
Many solicitors are prepared to offer upto half an hour of legal advice for a small fee, some even offer a free initial consultation to discuss your situation.