Absolutely marvelous! As an adult reader I totally adore the clever and delightful textual parody of Alfred Noyes' classic The Highwayman ballad (and indeed also much appreciate that with The Highway Rat, Julia Donaldson has just taken Alfred Noyes' external form and has not made her text content wise into some silly love story and her Highway Rat into a romantic type of hero, as no, that would in my opinion have made The Highway Rat annoyingly maudlin and not the engaging and so very much fun poetic parody of The Highwayman that it is).
And as a child (that is if I had read The Highway Rat as a child or had it read to me, but of course The Highway Rat was not yet available when I was a child, since it was only published in 2011), oh yes, I would have oh so much loved loved loved the Highway Rat and totally, absolutely appreciated it (with both its in many ways a bounding horseback ride imitating form and in particular its textual, verbal themes and contents) as a what I would label an inverted trickster tale, with the Highway Rat, with the cocky and oh so sure of himself and continuously bent on subterfuge, mayhem and greed villain finally meeting his match and getting his just desserts (and indeed, a pun is most definitely intended here) when he tries to rob a diminutive duck, who though not only turns the tables on him by playing up to his legendary gluttony and greed (and getting the Highway Rat hopelessly lost in an echoey cave), the duck also also takes possession of the Highway Rat's horse and rescues all of the food that had been stolen, returning all of it to the Highway Rat's victims (who share their retrieved goodies amongst themselves and have a huge party and feast, whilst the Highway Rat is lost in the echo cave, finally makes it out at the other side, and delightfully ends up throughly defeated and working at a very lowly type of cleaning job).
Combined with Axel Scheffler's brilliantly imaginative illustrations, which not only mirror Julia Donaldson's delightful engaging, entertaining (and parodistical) verses, but also visually and aesthetically sometimes even expand on them, The Highway Rat (and indeed even though I personally do not all that much enjoy stories or poems featuring anthropomorphic rodents) has definitely and certainly been a full five star book for me, a wonderful parody of Alfred Noyse and an engagingly humorous tale of trickery and standing up against bullies that also is first and foremost totally wonderful to read aloud.