I’m currently selling my late father’s flat which I have rented out for the last 5 years. First offer accepted in August. Chain on house I’m buying has collapsed because of the delay caused by my buyer. She has now turned round and said she wants gas and electricity safety certificates. I refused to pay for these. If anything arises from these inspections can I refuse to negotiate a reduction in the purchase price on the ground that the transaction has been unnecessarily delayed ?