i am lookking for a black stud dog in the east sussex area, for a first time mating with my eighteen month old bitch. She has a low hip score

What breed is your bitch? If you use any dog with out first eye testing or hip scoring your bitch and the sire of the litter you leave yourself open to prosecution under the sale of goods act if anything goes wrong with the resulting puppies. You should find out from your vet or breeder of your bitch what hereditary diseases the breed suffers from prior to breeding. Have you asked the breeder of you bitch what they would suggest you use as a stud dog?