Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
For clarity - are you the Executor of the Will - and are properties b and c held in the joint names of your father and brother alone
The executor needs to apply for an immediate sale of the properties using the Trusts of Land and Appointment of Trustees Act.
Theprocess is described here
Please ask if you need further details