Thanks Andrew : http://www.britmodeller.com/forums/index.php?/topic/234955042-italeri-2014/
After the Wessex HAS.3 (http://www.britmodeller.com/forums/index.php?/topic/234940477-148-westland-wessex-has3-by-italeri-released/page-1) Italeri is to release in 2014 a 1/48th Westland Wessex HAS.1 kit - ref.2744.
Source: http://www.italeri.com/imgup/Preview%202014_LR(1).pdf
V.P.