I was waiting for the plans to be approved by the council before submitting my review, but as the Covid-19 is delaying their approval, thought it best to respond with everything so far (I'm not expecting council to object though, as it is all permitted development).
I have no hesitation in recommending Jason Bates of Yarm (or his partner Jason McArdie, who did the structural calculations for the steel work).
Jason (& Jason) both attended site at short notice and produced the plan in a matter of days, with comms over email and without any delays. I was able to document the changes on the PDF drawings and Jason turned these around very quickly (considering it was the Xmas/New Year break).
Jason McArdie produced the steel works and worked with Jason (Bates) on a minor change to the plan as a result of a minor structural change and these were done within days (if not hours). The price for the plans and the structural calcs were very competitive and I have already recommended Yarm to others seeking building plans.
Jason also helped with my submission of the plans to east staffs council, which helped me immensely and avoided me putting through an incorrect submission.