Your solicitor company sounds like one of those case budget solicitors, which is when you don’t have a dedicated legal person, it’s just picked up in a team. They treat your case and don’t communicate to you directly. 😮
Most people would require a mortgage from a bank. With cash buyers, obviously the source of the finance needs to be legit. HK people works hard, good at saving and investments to not necessary require a mortgage to purchase their new homes in the UK 👍