Office space in Willenhall. Planetary Business Centre has offices to let in Willenhall and office spaces for rent. The Willenhall office space location totals around 52,500 sq ft of workspace enabling customers to rent space or take on space for lease in any of the 60 business units. The office space in Willenhall is available on a flexible licence agreement, meaning office units may be leased individually, or together, on very flexible terms.