Thank you for your reply.
There is indeed a market for my product, so I am not worried on that front.
In terms of funds, I was looking at renting a residential property and I would hope to be able to run the business from that.
The limited funds we do have would help us during the start up period, but I know sales would be instant.
I'd not be looking for any kind of loan in the US at this stage (no mortgage, no bank loan, no credit card) so we would have a banking period of turn over and earnings to build up our credit score over a period of time without relying on credit from the get go.
I have lots of friends and some relations there who can assist with information about utilities bills, state and national taxes etc.
I have already spoken to a Visa application company who have told me my credit score in the UK holds not bearing on me running a my business in both countries and also that I don't require a start up cash injection as required on other classes of Visa.
I am studying the L1 visa requirements at the moment but would welcome any other feedback.
Thanks again for your reply.