Thanks to everyone who has commented on my previous thread. The vendors have now told me that we need to exchange by this Friday otherwise the chain is at risk of collapse. The thread is here:
it usual for the vendor to have calls with the buyer and estate agent to ‘assess progress’ and ‘move things along’?
In the meantime I just received the structural survey this afternoon. I appreciate that its a Victorian London garden flat so will need some upkeep however I was not prepared for the number of ‘red rated’ action points including:
- penetrating external damp in the front and back walls and a defective plinth which needs replaced as it has widespread cracking’. The reports recommends ‘further specialist investigation to the whole property is prior to the exchange of contracts’
- ineffective damp proof course (vendors cannot locate the guarantee)
- damp to the bathroom/kitchen wall and blown plaster elsewhere
- roof is ‘poorly fixed, loose and corroding’. ‘The roof cover is in poor condition and at the end of its useful life’. In addition ‘metal flashings and lifting and could leak at any time’ (there is a guarantee however it runs out in Feb 2021 I think)
- one load bearing chimney breast has been removed and ‘its not not possible to see if adequate support has been provided to the 2 stories above’. There is nothing in the Information Pack about building regs orremoval of the fireplace
- some sash windows cannot be opened due to settlement
- non-sash windows do not meet British standards (also are not FENSA compliant)
- asbestos in the shed!!
This is just the priority actions, there is a load of more usual comments about moss on gutters etc.
Clearly cannot exchange by Friday and im not sure if I should accept the property as it is, arrange for contractors to visit to quote for the remediation and try to negotiate the price somewhat, or wheher i should just walk away 
Any advice would be appreciated 😊