Optus Glean UK provides commercial cleaning across Belfast — offices, healthcare and CQC-registered settings, industrial premises, retail, education and specialist work — as part of one nationwide contract. Every operative is PAYE-employed and AccessNI-checked, work follows a written specification, and you pay one fixed monthly fee with a free survey first.
Cleaning across Belfast's business districts
We clean premises right across Belfast. Our teams work throughout the city's main commercial areas — the Titanic Quarter, the Cathedral Quarter, Belfast City Centre, the Gasworks and Laganside — as well as out-of-town business parks and industrial estates. You will find our operatives around Donegall Square, City Hall and the Lagan riverside and the surrounding streets. Whether you run a single office or a portfolio of sites across the city, the specification and the standard are the same on every visit.
Every sector in Belfast
Belfast's economy is varied and so is our work here. We clean for financial and professional services, advanced manufacturing and aerospace, creative and digital media, life sciences and tourism, among others. That includes healthcare and care settings — including work in and around Royal Victoria Hospital, Belfast City Hospital and the Royal Belfast Hospital for Sick Children — to the NHS National Standards of Healthcare Cleanliness 2025 and, for CQC-registered providers, the RQIA's Regulation 15 (premises) and Regulation 12 (infection control), education sites, from Queen's University Belfast and Ulster University (Belfast campus) to local schools and colleges and transport hubs such as Belfast Grand Central station, George Best Belfast City Airport, Belfast International Airport and the Belfast to Cairnryan ferry link.
Northern Ireland vetting and regulation
Care settings in Northern Ireland are regulated by the RQIA. Operatives are vetted through AccessNI — Northern Ireland's equivalent of the DBS — with Enhanced Disclosure for regulated roles. Through our Irish sister company, OPTUS GLEAN LIMITED (CRO 813541), we can also offer genuine all-Ireland cover for organisations operating on both sides of the border. All operatives are PAYE-employed by Optus Glean UK — never self-employed or agency labour drafted in per shift — which is what keeps standards and accountability consistent across a contract.
One contract, every Belfast site
Most cleaning firms in Belfast can only cover the city and its immediate area. If you operate sites beyond it, you end up juggling a different local cleaner in each place — different standards, different invoices, no single point of contact. Optus Glean UK gives multi-site organisations one contract, one specification and one account manager across every UK site, with the vetting and TUPE capability to take on a switch cleanly.
From Belfast we also cover the surrounding area, including Lisburn, Holywood, Newtownabbey, Bangor and Carrickfergus.

