I'll level with you. Our total spend for the General Election in Liverpool Wavertree is likely to be around £1100 by the time election day is upon us. That is money that has been donated by members and includes my own contribution that will be in the election expenses. I'm not sure who will be funding the other campaigns from the Lib Dems, UKIP and the Tories.
For a full breakdown on Luciana Berger's register of interests, you can look at http://www.theyworkforyou.com/regmem/?p=24924
One donor is Deloitte MCS Ltd who are currently reviewing the options for NHS Professionals who supply staff to the NHS (story here). They are currently publicly owned, but Deloitte are in charge of the review. I hope for Luciana's sake that they recommend that it is retained in the public sector, otherwise things might become a bit awkward for the Shadow Minister for Public Health.
The Morning Star have already covered this story here.