A Villianous Spite — Mike Connor

Cabbington is usually a quiet town hidden in North London, this is why Jack Landon chose it. A perfect place to hide as he worries over keeping the powerful robot, he inherited, a secret. He comes across an injured father whose trying to rescue his kidnapped son. Jack takes pity on the mortally wounded man and agrees to rescue his son.
By choosing a shortcut, Jack faces disaster as he's whisked away to another world. The planet Gronoldva has been damaged by a war. Now he must survive being cut off from everyone and everything he knows.
Learning to survive on the ravaged world is fraught with peril, the dinosaurs here still live. Ionopuric Bexatrocs are lethal and the town Jack finds is being terrorised by the biggest one. Nearly everything is in ruins with no means to destroy the beast. Having to rough it is one thing, getting to grips with the odd culture is difficult. Can he find a way back home and carry out his quest?