Jacked it up and pulled it out from underneath without incident. Halfords do not stock that particular type so it's now on order and I'll probably collect midweek. Shame I didn't sort this out earlier, what a cracking day of sunshine and dry roads I have missed

Thanks for the pics, I used one of the chassis 'rails' to do it with some padding. It only needed to go up for a minute and then took the stress straight off it.
What a faff!