We're planning to buy a house in an adjacent village to let out, and all our queries and searches were finalised in early January so we've offered the seller ('the Smiths') exchange and completion dates on several occasions. The only response their solicitor has given is that they still have outstanding queries regarding the house they are buying. That is the top of the chain. Their queries have presumably been outstanding from December or earlier, and we're conscious that the stamp duty holiday ends in 7 weeks. The Smiths know that we're buying the house to let out, and are therefore aware of this deadline.
Would it be reasonable for us to ask them (politely, through their solicitor) if they would consider moving into a rental if we cannot complete the purchase by Friday 26 February? Or what else could we say to get things moving? Our solicitor has been pretty good at keeping us in the loop but theirs hasn't been very good at sending paperwork through etc.