Thanks @InvisibleMan78 for the tip. I tried Chrome and managed to get a lot further by resuming a load of times but it still eventually failed. It got me thinking though and in the end I reverted to using CURL commands with the -C option to resume the downloads. After around 20 or so resumes the CURL method eventually got me the file.
Thanks @chaban for hosting the file on Mega, that was much appreciated.