SIBCAS – Supplying clients throughout the UK with relocatable modular buildings and site accommodation for almost 50 years. I ... f you require reliable, high-quality modular or site accommodation buildings then look no further. SiBCAS has an extensive range of exceptional accommodation units available for hire, from self-contained welfare units, storage containers and anti-vandal offices to multi-functional modular buildings to suit any purpose including modular classrooms, office space, sports clubs and health centres. read more