Four years ago, we purchased a flat featuring a stud wall that was erected 11 years prior, effectively transforming a large kitchen into a second bedroom. The construction lacked proper documentation, leading us to secure indemnity insurance. Subsequently, we upgraded the boiler and renovated the bathroom. Seeking pre-approval for these modifications from the Council, we now intend to sell the flat. To proceed, we must obtain Consent for works from Southwark Council and have already communicated the alterations via email. The Council answered back requesting to see the floorplan of the flat and evidence of kitchen fire door installed. Is there a risk of invalidating the indemnity insurance? Can we inform the buyer that we will discontinue contact with the Council and rely on the existing indemnity insurance?