PIPE CHUCKS

I see plenty of large mechanical drivers for this job, they look like drill rigs for power poles. Maybe the power company sells them used.

To make your own, and you would need a good fabrication shop, I would do something like what I see the oil drillers doing with a chain.

There is a special pulley called a cat head, I think, it's for chain. Somehow a lot of wraps are put around your screwpile and then one around the cat head. An opposing set of small wheels keep the chain tight on the pile. Hopefully the pile doesn't go into the ground faster than the chain walks up the pile.

You could also use motorcycle type chain, if it were loose enough to spiral around the pile. The trick is the master link to make either chain endless.

Keep your fingers out of the way!

Cooper Tools might make something you could either use, or adapt, or would illustrate a direction to go in for fabricating the specialized mechanism you may need.

Pole axes and chain Vicegrips come from the need to grab round same as even the monkey wrench have long been around.

Then there is the strap wrench.

Some strictures may apply to your application as far as damage to what you are grabbing.

We often used Chain Vice grips with 750 pins for mounting lights on pipes, but these are film things come from Matthews.

Some of these tools if not directly applicable to your work, will at least point you towards the concepts. Gotta go. Wife says wrap it up!

Depends on the diameter of the piling.

What about reasonably priced tail pipe expander?

Google 'casing tongs' Eckel makes some fine ones, they'll turn anything...

I have googled casing tongs and they seem to be close to what I am looking for. Is there anyone in the UK selling these things or where might I find a secondhand one for testing.

The oilfield service providers in Aberdeen would be a start. Try Weatherford, they make and rent them, I don't know if they sell them though.

The first thought that came to mind is the strap wrench. A development of something like that, maybe?