Hello Boys! (webcast)

 was a promotional mini-episode included on the release of Doctor Who: The Collection — Season 10 Blu-ray boxset and released as part of Jo Grant Returns.

The title was confirmed by writer Pete McTighe on Twitter in a tweet about the various mini-episodes' individual titles.

Synopsis
Jo and Cliff Jones return to Llanfairfach to defeat more of the deadly giant maggots for the Doctor's sake.

Plot
At a place in Llanfairfach called Wholeweal, Cliff and Jo Jones arrives in Bessie. Cliff worries about the danger as the Doctor isn't there to fix it. Jo assures him that everything will be fine, as the Doctor didn't fix it last time either. She did. They step out of the car and grabs the Shrinking Fungus and the spraying containers and steps into a barn to find... giant maggots roaming around.

Later, Cliff is carrying a bucket of miniaturized maggots and Jo reminisces about how she enjoyed it. As Cliff's iPhone rings, Jo rambles on about water taps in the TARDIS and how the Third Doctor could never fix them, as Cliff interrupts to tell Mike Yates was in trouble in a place called Devil's End. Jo then happily says, "Here we go again".

Cast

 * Jo Jones - Katy Manning
 * Clifford Jones - Stewart Bevan

Crew

 * Writer - Pete McTighe
 * Runner - Verity Green
 * Make-up - Kate Lockwood Cowell
 * Dubbing mixer - Mark Ayres
 * Colourist - Rich Alderson
 * Updated special effects - Niel Bushnell
 * Assistant producer - Aaron Lloyd
 * Filmed and Directed by Chris Chapman
 * Producers - Chris Allen and Russell Minton
 * Bessie courtesy of Dean Rose
 * Marmaduke the Maggot supplied by Steve Roberts
 * Thanks to Lee Binding, Peter Crocker, Derek Handley, Anthony Lamb and Mike Tucker

Continuity

 * The story is a sequel to The Green Death.
 * This is the first on-screen appearance of Jo Grant since the The Sarah Jane Adventures episode Death of the Doctor in 2010 and the first licensed appearance of Clifford Jones since the home video minisode Global Conspiracy? in 2004 (though Bevan had since reprised the role in the 2006 fan film The Pair o' Docs Paradox).