Money Saving Expert® is dedicated to saving you money on anything & everything by finding the best deals and beating the system. It's based on detailed journalistic research as well as cutting edge tools and has one of the UK's largest web communities.
The site includes a number of useful tools including:
Budget Planner - BudgetBrain
Benefits Check-Up - 5 Minute benefits Check-Up

Other tools are also included to help find best mobile rates, international call cost checker, loan rates, bank accounts etc.

Martin Lewis has produced an excellent free 45-page PDF booklet supported by Mind, Rethink, CAPUK and others, for people with mental health problems and those caring for them. It covers how to handle debts when unwell, work with banks, free debt counselling, specific tips for bipolar disorder or depression sufferers, whether to declare a condition and more. Money Saving Expert Guide to Mental Health & Debt