What strategies have been successful in encouraging employers to provide secure bike parking for their employees, and how can cyclists effectively communicate the benefits of such facilities to their employers, particularly in cases where there may be concerns about space or cost? Are there any examples of companies that have successfully implemented bike parking schemes, and what incentives or benefits have they offered to encourage employees to cycle to work? How can cyclists work with their employers to identify potential locations for bike parking, and what are the key factors to consider when designing and installing secure bike parking facilities?