tomato automator

I've been looking everywhere in this country to find tomato automators (square, shallow plastic trays for planting and watering tomato plants).
They're readily available in America but companies there will not ship to the UK.
My father-in-law in America always used tomato automators for his tomatoes and he grew the best, most delicious tomatoes ever.
Does anyone know if these are available anywhere in the UK?  If they're not available, why not?
(If you don't know what they look like type "tomato automator" in Google or other search engine)

I don't think the ring culture devices would work.  The automators I'm looking for are about 30cm square with a large raised centre hole for the tomato plant and four smaller holes around the perimeter for watering.  Those outer holes direct the water away from the central root to the smaller surrounding roots which seem to make the plants grow stronger and produce more tomatoes.

 I think growpots from greengardenshop.co.uk are the uk eqivalent. I use three to a decent growbag. In priciple the 'feeding' roots remain within the inner pot where you feed with liquid feed and the 'water roots' go into the grobag which get their water from the outer pot. Successfull for me, watering can be regulated and controlled to save split fruit and the yield is always better than from those in the greenhouse border. Full instructions on the pots and on growbags intended for tomato growing (cheap at Homebase at the moment)

I am new to this growing and have also used grow pots straight into the grow bag, 3 pots per bag, i have also sunk upturned plastic bottles into bag at side of pots to water,should i give the same amount of water everyday? or just when i think its needed. 

Is this what you are looking for?
http://www.parkseed.com/gardening/PD/96408

Ebay 1 international seller Item number: 370174688530  shipping might be a little high at $16.90 tho'