Hi. I have to go with the excellent advice from Kirkcaldy. If Hanel or any company you choose to do business with do not agree to this, walk away, there are many many properties out there that have all the paperwork in order!
Personally I would never use the same legal team as them, I've had first hand experience of just how helpful Hanels legal team were, and to be honest it's the only time in my life when I could of happily murdered someone!
Best of luck, whatever you decide