What is your daily average pageviews?
Collapsing at an alarming rate even though rankings are fine. USA used to be 5-6X that of the UK, now they are about equal with the US falling further.
Whilst G has no objection to including US sites in the G.uk SERPs, it has a total aversion to including non-US sites in their G.com SERPs, likewise with other G.tlds.
I'm not even bothering with G these days for active business enquiry traffic, I go direct to the serious architect/specifier/buyer, I realised several years ago what G was going and it certainly was not for the benefit of my, or anyone else's, businesses, all they are interested in are one's advertising Dollars however they would seem to have totally screwed-over themselves by adopting that model, in my widget industry, since it is extremely evident that companies are refusing to play their game.
They can continue to succeed without G.