My word your prices are cheap. Have you done research to see what your competition charges? IMO you are seriously underselling yourself. I know your overheads are low being mobile, but you need to establish what you are happy to make in an hour and base your prices around that, taking into account product cost, insurance cost, travelling costs, tax and national insurance ect ect.
I agree with all comments above, and there are a few bits i would change. Your descriptions of your treatments are great, but you've used the word "then" a lot. for e.g. DELUXE MANICURE £9.00 ALLOW 40 MINUTES
WE BEGIN THIS LUXURY TREATMENT WITH A HAND SOAK, THEN YOU GET YOUR NAILS SHAPED AND FULL CUTICLE TREATMENT. THEN A LUXURIOUS EXFOLIATION IS DONE FOLLOWED BY AN ANTI AGEING HAND MASK. YOU WILL THEN RECEIVE A HAND AND ARM MASSAGE AND YOUR NAILS PAINTING IN THE COLOUR OF YOUR CHOICE.
You may want to reword it slightly to avoid the repetition, for e.g. "We begin this luxury treatment with a hand soak, followed by nail shaping and full cuticle treatment. You will then receive a luxurious exfoliation and and an anti-ageing hand mask. Your treatment is completed with a hand and arm massage and nail polish in the colour of your choice."
Couple of spelling mistakes but overall a lovely website - well done!