sorry, I posted that by mistake before I finished.
It should have been.
47 down. firm's vehicle. (7,3) ?O?T?N?C?R.
54 down. Unshakeable. (7) ???M?N?.
58 across. Infected or infirm.
59 down. Estate superintendent. (7) ??E?A?D.
Thanks for your answers, my tablet is behaving weirdly and I'm now on my laptop.
I've managed to fill in the missing answers after the replies I did get helped.
Thanks once again.