We used them for a straightforward sale of a freehold property, with no chain, to a buyer with no chain.
In my opinion, Ison Harrison made a complete mess of something they must deal with very frequently - a sale by family members acting as Power of Attorney for an elderly relative.
After receiving, reviewing and copying the PoA documents, they asked for the death certificate of the owner of the property! (who was, of course a loved one, and very much alive!)
Luckily I was not unduly offended, but many people would have been. I felt this was very unfortunate, and showed a lack of professionalism and a lack of attention to detail.
A year after copying the documents, and six months after the completion of the sale, Ison Harrison discovered that the copies they had taken of the PoAs were incomplete. This was causing issues at the Land Registry. They did not 'own up' or apologize, but rather sought to deflect the blame to me, the buyer's solicitor, and everyone else. They actually wrote in an email to me "these things happen". I found that shocking, coming as I do from another highly regulated profession.
They behaved in way which appeared to me as arrogant and unprofessional.
I will never use them again.