At CPG we tailor our psychology services to fit in with your requirements. Collaboration and confidential communication with our clients lies at the heart of our practice. With consulting and training rooms conveniently located in central London (Harley Street, Canary Wharf and Liverpool Street), we take pride in our ability to provide easily accessed professional, effective and efficient psychology services. At CPG we tailor our psychology services to fit in with your requirements. Collaboration and confidential communication with our clients lies at the heart of our practice. With consulting and training rooms conveniently located in central London (Harley Street, Canary Wharf and Liverpool Street), we take pride in our ability to provide easily accessed professional, effective and efficient psychology services.