This information is kindly supplied by ARMA:
summary
This Advice Note looks at the typical events in buying and selling a leasehold flat.
It explains the usual restrictions found in leases that can affect how flats can be sold. Being aware of these restrictions can help speed up the sales process.
Well also explain how the landlord and managing agent will be involved, and the kinds of information they will be asked to provide.
At the end, theres a useful list of questions that buyers may wish to ask their solicitor before going ahead.