Choosing a Celebrant is a very personal choice; if you are able to speak to a couple of Celebrants before making a decision then do so.
I would advise you to do a little research. Qualified Celebrants have had to undertake an extensive course and demonstrate that they can create and perform ceremonies to a high standard. However, currently there are no requirements for Celebrants to have completed an NVQ L3, so you may wish to ask.
Personally I would try to avoid “script only” services. These companies offer an off the shelf ceremony which can then be read by a friend or member of the family. Using a friend or family member to conduct your ceremony can add pressure to your day for you and them.
I would also advise that you use a Celebrant who belongs to a recognised Professional Association.
Most of all the person needs to be someone you feel understands what you want from your ceremony and works with you to achieve this.
Choosing a Celebrant to help you create that special ceremony is an important step towards making your occasion a really memorable one. Why not take advantage of the free initial meeting I offer ? I believe it is important to meet informally to discuss your ideas and what I can offer. Meeting also gives us an opportunity to explore the type of ceremony that would best suit your needs.