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. Currently there are no requirements for Celebrants to have completed the National Qualification for Celebrants. Qualified Celebrants have had to undertake an extensive course and demonstrate that they can create and perform ceremonies to a high standard.
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.
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.