@Getyourarseofffthequattro I'm sorry, it is so, so stressful, and I'm not displaced from my family too.
Has anyone mentioned what mortgage provider they're using? If so, you might be able to make a guess... Ours took four days with Barclays, but our buyer is using Kensington and they're seven weeks into the process with no offer yet.
If you know the area where they're buying, you can probably find out how long searches are taking at the moment, too...
I've got no idea on enquiries, though, I can't even get our solicitor to confirm if all our buyer's enquiries are satisfied, and our solicitor has reopened some of the closed enquiries for our purchase for some reason...
I don't think you're being a twat, but I'd mentally prepare for them to decline - it feels like such a fraught time to risk not being on the property ladder anymore. DH's parents have been pushing us to still sell even if our chain collapses and we can't buy, but we couldn't do it, we know far too many people who now feel stuck in rented. I hope they will, though - just prepare yourself so it's not a let-down if they say no 
@LopsidedWombat That's bizarre. Was it ever registered? Is it a requirement of the lease for the company to exist?
Barclays will re-value the house we're buying next week, to check out the partial loft conversion. Hopefully that'll go okay. I'm hoping our buyer makes some progress, too... I think September is a lost hope now, but I'm hoping mid-October might be okay.
I replied to our solicitor on Friday to say that we were on CC for 3 of the 4 issues that she'd emailed she hadn't had updates on... no reply. I feel like she's working against us more than with us, at this stage!
There's a bit of me that wants to pull out and nest here now, so at least we're ready for baby somewhere.