"The new adaptive bitrate technology and speed diagnostics page help optimise the viewing experience, while the resizable window gives users flexibility to switch between different quality streams, hopefully leading to a more satisfying experience overall, " said Mr Rose.

BBC: iPlayer goes high definition

When composing an email in the new experience, just click on the box in the right hand corner of the window and it will bring up the option to temporarily switch back.

FORBES: Connect

Compared to the sticky accelerator problem that plagued Toyota in 2010, a sticky window switch is a minor thing.

FORBES: Toyota's Huge Recall Is Not The Biggest Risk It Faces