Some links which may be of interest/use:-

Badminton England website - http://www.badmintonengland.com

Central Sports Website (a good supplier of badminton eqpt) - http://www.centralsports.co.uk

Sport Discount website (another good supplier) - http://www.sportdiscount.com

Badminton Bucks - http://www.badmintonbucks.co.uk

Badminton Section MKweb website  - http://www.mkweb.co.uk/sport/DisplayArticle.asp?ID=14821

Let me know if you want to add any other links