It was a Lynx AH7...
From the MoD News page:-
The MOD can confirm a Lynx helicopter from 847 Naval Air Squadron based at Royal Naval Air Station Yeovilton crashed near Modrinje, Bosnia, on Monday 21 February 2005.
The three aircrew sustained minor injuries and were able to walk away from the site. The area of the crash site is dangerous due to poor weather conditions and fallen power lines.
Members of the public and media are therefore advised to stay away from the site. A full investigation is underway and details will be provided when known