Your friend could also try looking at
http://www.nce.co.uk/ which has searchable files on consultants and contractors. (think you need to register to search) Have a look through there to get some names and write off to the ones near them. At this moment in time, it may only be worth targeting the big companies. They are more likely to have done placements before, and to have a wider range of disciplines to give a them an overview of the full spectrum of the industry.
Local structural engineers can be searched for here
http://www.findanengineer.com/ too; this almost always gives you consultancy firms, not contractors.
Another avenue would be to contact the universities and see if they have any local links with companies.
The local authority could be worth a letter too.