BBC forecasts have been decreasing in quality for a while now - but that's nothing to do with Met Office, who provide their own very good presenters and forecasts on their own site every day - far superior to anything on BBC. I think Yahoo have a contract with them.
A Met Office professor after a RMetS meeting earlier this year told me that forecasts would become an ever decreasing part of MetO services. The MetO is a world organisation now and I'd imagine that the BBC contract is just a small part of their business.
I suppose in the grander scheme of things people will no longer be able to "blame the Met Office" when the BBC get it wrong!