I didn't see it but I do have Wolffe tools and one of them is a 2" wide planting trowel its about 9" long and pointed. it is brilliant and goes through clayish lumps with ease.

It could have been something known as a Great Dixter Planting Spade. Google it for more info.!

Thanks for that both of you. I don't think it was the Great Dixter Planting Spade as it was a short, trowel length tool without the top T-bar. I did Google it too and if it's that much I would have to go without anyway!
Though the Wolf one looks good, it's not what he had, so might have to wait until we can all go out again and have look round, after all I've lived this long without one!

I think Monty Don uses something similar (or the same) and have tried, but failed, to discover what it is and where to buy it!

Well...lets ask on the GW facebook page! I’ll go there now!

Did not watch but was it one of these?
https://www.amazon.co.uk/Garden-Trowel-Japanese-Gardening-Multifunctional/dp/B073P8QF5K
I have one. They are great for cutting through almost anything. Not to be carried outside the garden though. I think you would get arrested.

I saw the programme and was also intrigued by the trowel.
It was quite wide and shield shaped with a handle about a foot long I should think.

Have a look at the Niwaki website. I have their Japanese trowel which is like Adam’s tool but VERY sharp. Don’t allow children anywhere near it if you get one!

I didn't see the programme. I have a trowel a bit shorter than the usual length and half an inch narrower at the handle end. But it quickly gets narrower and comes to a rather elegant point. Its marvellous for getting under difficult small things (dandelions, seedling brambles etc)as you can winkle it in underneath the roots much more easily than a normal round one. Sadly it doesn't have a makers name on it. This website has lots of designs - you might find what you saw here.
https://www.independent.co.uk/extras/indybest/house-garden/gardening/best-hand-trowel-for-gardening-steel-a8212741.html

Thanks Karen and Shirley for the interest in trying to help me find out. I had a look at the Amazon site Owd! Wow, now that is a weapon, I can see me getting locked up for even wielding it in the garden!
I had a look at the Niwaki website, but still not sure.
Thanks Stera for the link, which because I use an as blocker, won't let me look.

Heres the answer from GW FB page.
https://www.sneeboer.co.uk/our-collections/hand-tools/

Thanks for going to so much trouble Karen, it certainly looks like it, though last night he had one with a T handle. I mentioned to OH that I couldn't find out where it came from, so while I was watching the programme he bought one! Me being a gardener was looking for a hand trowel, him being a non-gardener just looked up small spade, and bought it from Bigwicks Ltd., Home Fragrancing, Burnley. Why they have them who knows?

Burgon & Ball Perennial Spade - RHS Endorsed
SKU: GTBSPSRHS 1 £22.99

Mystery solved and OH kindly bought it.

Well done OH! Great result! Thanks for the link. Much less expensive too.