Surveillance - whether physical or electronic - is an art form in itself. It may involve following a vehicle - sometimes conducted by motorbike, especially if the subject is in a taxi or using city bus lanes - or endless hours on foot, or a combination of these and other factors. People travel by car, by train, by air, by bus. Years of experience and access to resources mean that we can keep on top of the situation, whether working solo or as a part of an observation team. Our Watford manager, Pete Biggin, is a biker and uses his skills to good effect