Time machine keeps creating a new backup

Sphardy, many many thanks for your diligence it finally worked!! it was as I noted earlier when I tried the backslash spaces you posted and left it running, when I returned terminal was showing a prompt again, so I then tried the next step
hdiutil attach -nomount -noverify -noautofsck /Volumes/ReadyNAS/Fred\ Smith\ office\’s\ iMac.sparsebundle
and got this!
/dev/disk2 Apple_partition_scheme
/dev/disk2s1 Apple_partition_map
/dev/disk2s2 Apple_HFSX

I am now rolling the rest of the instructions as fsck is running and repairing the sparse bundle. still long way to go and lots more weird Linux greek commands but at least I can access it!!
It may well have been working before I just couldn't tell, Terminal just sits there with no prompt. so if anyone else is following the same fix wait till the prompt retunes after the first volume check.

Thanks as well for the PM really really kind of you.