In September I'll be leaving the BBC to join OFCOM, where I'll be leading its thinking on the strategic and policy issues raised by the converging digital media environment.
One of my areas of focus will be developing ideas for a new Public Service Publisher (PSP).
In essence, the PSP concept is for a public institution to be charged with delivering public value solely via interactive media, rather than via broadcast.
The idea was first mooted during OFCOM's first review of public service broadcasting back in 2004. It has developed considerably since then, notably via a discussion document and associated creative vision published in January 2007.
I have always felt that networked media, and particularly the Internet, is capable of delivering incredible value - both private and public - with incredible efficiency. Now that a generation is growing up with the Internet at the centre of their lives, that case grows ever stronger.
I've had six amazing years at the BBC. I've worked with some incredible people. I've done much of which I'm proud. I've made some dreadful mistakes. I know I'll miss it hugely.
But the chance to shape ideas as visionary and as transformative as the PSP are all too rare. It was not an opportunity I was ever going to miss.
Southwark Bridge ahoy!