What should I look for?
Whether you see a Counsellor or a Psychotherapist, you should make sure they are accredited, either with the British Association for Counselling and Psychotherapy (BACP), or with the United Kingdom Council for Psychotherapy (UKCP). Both of these organisations issue codes of ethics to which their members have to keep.
Accreditation takes some years to achieve and involves a great deal of training and experience. Many counsellors and psychotherapists are working towards accreditation. They can, in the meantime, be members of either BACP or UKCP. This doesn't mean that they are accredited, but is an indication that they abide by the Code of Ethics of the organisation they belong to. Many will be good counsellors or psychotherapists and will have a lot of experience - and may well be cheaper!
The qualities you look for will depend on the kind of therapy you have decided upon -so it's worthwhile thinking about what kind of counselling or therapy you'd feel comfortable with. Ask around! You might like the sound of someone you hear about.