Happy Boxing Day! I hope everyone's been letting nothing them dismay. Heart-shaped thanks to all who've said nice things thus far about the new Spanner. "VonBlade" expresses hope that in "the next one" (if that ever happens) I might "spend less-time setting the scene for those who foolishly missed ep1." and while you may have a point, VB, I thought I'd put up the following exchange from the very first draft written back in March, to show just how much worse things could have been: 
GABBIE                           Cool.
But get some shoes. And not dinner lady shoes like you had. 
MARTIN                          Brilliant!
Yes! See you at six.
GABBIE                            (Cautiously) Cool. (Departing) Happy Birthday! Aww, thanks for stopping…
MARTIN                          This
is a good idea.
ANGEL                            The
shoes?
MARTIN                          Well
I need shoes ideally, but – I mean if it starts raining, say – No, buck up,
Martin! I need shoes.
ANGEL                            What happened to your shoes?
MARTIN                           Okay,
retrace my steps: I definitely had them on when I brought my boss his tea, then
he forced me through a magic mirror at gunpoint to find out how to bring back
the dead and I was in Heaven – although I don’t really believe in Heaven – and I
met you and we stole the Time Spanner because you said I needed to bring stuff
back from the Future because my world was
dying and you gave me a robot helper which I didn’t really want, sorry, but
apparently Heaven’s full of robots, oh and there was something about how you once
gave the Spanner to Hitler –
ANGEL                             Yes!
Specifically that it wasn’t Hitler!
MARTIN                           Or if it was, that it
was an accident –
ANGEL                              No! It was that it wasn’t Hitler.
MARTIN                           Sure, but that came a
bit out of nowhere. Anyway! Then you
stuck the spanner up my nose, into my brain, which is how you’re talking to me
now, sent me back to Earth –
ANGEL                             The physical plane.
MARTIN                          “Plane” yes, the plane, but
then I used the Spanner to go round the Universe back in time, just to check… not change anything, just check Gabbie
hadn’t heard me say… nice things about her, which she didn’t, so that all seems
fine, and everything seems great!
ANGEL                             And the shoes?
                                         Pause.
MARTIN                         Oh, I took them off to
go through the mirror! That's it.
   
 I still like the joke. Ultimately though, it was decided that this first draft was a bit... well Gareth used the word "glib", but I prefer "easy to write". 
 While I'm posting bonus material, here from that same draft is a fuller description of the Cat-In-The-Bag, which I knew would almost definitely have to be cut down, but sometimes writing's just fun:
 
LAIKA                              The
Cat in the Bag: Found furniture, peeling leather seating banks, fish-finger
sandwiches, Connect 4, Buckaroo, a single chandelier rescued from a Streatham
bordello, “Crash Test Dummies” on the jukebox by the Speak-Your-Weight machine,
actual crash test dummies propping up
the specials, a bowl of pens in the toilet, and – on the wall behind the stuffed
lynx – a seven foot high monochrome mural of Ariana Grande in a hazmat suit. 
(While it's an obvious stand-in for the Dogstar on Coldharbour Lane, the real inspiration for the Cat was the short-lived "The Rest Is Noise" which is now a TK Maxx, and – more recently– "the Hob" in Forest Hill, which recently reopened as the crushingly inorganic "Signal" a couple of years ago without a thought for... Christ, listen to me.)