Sorry, my op wording was imprecise ... meant that I was ready to go for a trundle once the clutch was persuaded to disengage.
It's now freed courtesy of Andrew's 'remove all cable slack' and Luddite's 'jack it up and provoke it' methods.
Have posted a short clip of it in the yard on the "Have you driven...." thread.
Many thanks for all the input.
K
