it isn't very surprising to hear these comments from britain. they generally tote the european view which always points the finger at israel before anyone else.
those pushing the proportionality argument are using it as cover for what they really want - an immediate ceasefire.. not a bad thing to hope for, but not very realistic either. they think that by putting world opinion pressure on israel, they can limit their behavior - and i think it is working to some degree.
nonetheless, any resolution condemning israel's response is likely to be vetoed. i doubt it will come to that point.. we're currently giving israel a pass to take quick action against hezbollah, but i don't think we'll let this continue indefinately.
http://news.bbc.co.uk/2/hi/middle_east/5195128.stm