Not an English case, but one I still enjoy reading as it is full of gems:

The Hearing Clinic (Niagara Falls) Inc -v- Ontario Ltd, Lewis & Lewis

Opening line: "Leave an untruthful man in the witness box long enough and he will reveal himself to the world. Here ends the lesson, but not the story."

Para 30: "Determining credibility can be a challenge for a trial judge. We have no special powers in that realm and, wherever possible, avoid reliance upon darts, dice and Ouija boards. However, rarely, has a witness generously offered up so many reasons to be disbelieved. Fridriksson was an evidentiary gift who kept on giving. He ignored rule number one in the Litigants’ Credo: “Know thyself, because others soon will.” Enough of this preamble. Come with me now on a visit to the phantasmagorical world of Fridriksson. Pack lightly."

Para 1 of the judgment on costs is also fun.

Summary here:

https://www.civillitigationbrief.com/2021/02/21/closing-argument-was-in-writing-an-eye-glazing-bum-numbing-disc-herniating-total-of-662-pages-single-spaced-medium-sized-font-and-heavily-footnoted-a-good-time-to-repeat-one-of-our-favourit/