This appears to be a complete SCAM and should be avoided at all costs.
I booked and paid for a taxi from Southampton Airport to a local Guest House and paid £16.16 by credit card.
Prior to travelling I attempted to confirm pick-up arrangements. I have never received a reply to any emails and the quoted telephone number was never answered. I tried the taxi operator GUY PRICE TAXIS & MINIBUSES. Again - no reply to email or quoted landline. The mobile number was always answered by someone who told me it was a wrong number!
Needless to say, we arrived late at night at Southampton Airport and no taxi. Local drivers had never heard of Guy Price.
I'll now try and get a refund from the credit card provider. Wish me luck!