Swiss Tony,
keep it simple.... just outlay all costs needed, give them a brief description of yourself, much like you would do on a cv. I drew up my business plan using microsoft powerpoint. It's got some excellent methods of presentation. Obviously I can only speak for myself, but banks usually want some kind of security for the loan (however a mate of mine secured £25 with HSBC unsecured!) My loan was for a little bit more (with HSBC) and luckily my parents secured it for me. Hope this is of use to you, and if you need anything else more specific just ask