Vet Diagnostics (Victoria House, Henfield Road, Small Dole, Henfield, West Sussex BN5 9XE) were an important and vital company in the link of importing primates into the UK for vivisection, conducting blood sampling tests to check for diseases. The owners, Colin and Lynda King, set up the business to assist their Shamrock Monkey Farm, but continued to work with other companies when activists closed the primate holding centre down. VDL then went on to work with other companies including Charles River, Porton Down, HLS, B&K Universal, Bioculture Farms Mauritius and Noveprim.

However, the company recently filed for administration and is to close down, getting rid of another link in the already-week trade of importing primates into the UK for vivisection.