Another agency related question

Hi all i just joined on here, ive had my class2 for 4years but only experience i have is with army wagons.
I have recently registered with an agency called challange group and wonderd if any1 has had any experience with them.
Im in the north west and they are saying they want to get me into tesco Widnes.
If any1 can give me any advice on their experience with either agency or the tesco depot in widnes im all hears.

Thanks