If your business is professional in nature, you had previous income, and you have contracts for future income, then I would appeal. I would also include a short business plan to lend credence to your desire to run a business. I've written many times about business plans. Do a search.
There is nothing on the MoM website that specifically excludes a LOC for a situation such as yours. Thus, your goal and challenge is to convince the MoM folks that you have a real business, know how to run it, and will be making real money. Hence, the business plan... projections, break even, anticipated revenue, marketing, etc.
I'm not saying you need everything in this template, and, it's a guide for things you ought to consider.
http://www.herberts.org/miscdocs/Sample ... ntents.pdf