Trophy Pet Foods seems to be a strictly UK pet food company, so I can't really comment on the quality, they do however have a website where you can get all the details.
One thing I notice on their 'Holistic Premium Dog Food' is the fact that the number one ingredient is Brown rice (>57%) and the second ingredient is chicken meat (>20%).
What this means is that 57% of what they call premium holistic is brown rice filler. You should always go with a dog food that has a single source high protein as the number one ingredient.
They do offer some free samples at:
Trophy Pet Foods - Free Samples