Business link are being cut in nOvember so if you want one if their 3 day courses you need to book it now it's £100 Fab course, I have a great idea for a business but once I did my figures and worked out my profit would be less than minimum wage I've changed my business plan. Good luck!
Business Link seem to have a good reputation - but as others have said this service is being chopped, so check them out soon. They have a business plan on their website. There are people at HMRC who give free advice on tax and so on - again, some of these services are being closed down.