When you say you were only lucky that they reduced your daily at last assessment it says it all, lucky for me though I had my local mp who is a tory on my side and she tongue lashed them in 3 page letter along with specialist letters with every point that contradicted the assessors claim highlighted by highlighter pen. the result award reinstated, 5 years instead of 2 and promise of only a light touch review in 5 years rather than full review. But Please make the official complaint about assessment company and keep a copy of those records too, it will aid you in the future as well as you will be noted on the assessors company as someone that will follow up with complaints, you have to remember these companies loose money too if too many complaints are filed and they will want to avoid those.