Nail technician course? hertfordshire? london?

Hiya everyone, i am looking for a nail technician course around hertfordshire or london. Another thing i will need to know is, what type of certificates do i have to have to be a qualified nail technician? Another thing, if i did a acrylic nail course would i also have to do a gel nail course? or is there something combained? average costs? aswell please, THANKYOU :)Nail technician course? hertfordshire? london?
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