Company targets most vulnerable people

A company offering what they say is free benefit appeals work on the basis that they are paid 45% of any backpay that the client receives from the DWP is working in the area.
As an example - a client who won their appeal ended up paying the company £1500! The company have no official address, just a PO box in Preston.
They have a website www.benefitanswers.co.uk Their website also asks for contact from clients going through the benefits appeals procedure which would indicate that they are likely to receive a high amount of back pay and are therefore vulnerable to end up giving almost half of it to this company.
We would advise people who need support for any type of benefit appeal seek help with organisations such as CAB or the benefit advice shop in Rhyl