The current state of play is that Network Rail do not want to accept legal liability for economic losses suffered by local businesses as a result of the bridge closure. They will consider applications on a case by case basis and as they said at the meeting they will help those worst affected and in imminent danger of going under.
They have previously asked businesses to complete a personal injury compensation claim form, which is obviously ridiculas. They have now agreed to accept an email sent to Rebecca McAra containing a much simpler set of information. I’ve created a page on the blog detailing how to apply for compensation and an electronic version of the form you can use to send it.