UK Immigration Detention and Prison Facilities Management Contracts 2025

The UK custodial estate is heading into a defining period for facilities management. Between 2025 and 2030, several of the largest and most sensitive contracts in immigration detention and prisons will come up for renewal or re-procurement. For facilities management providers, the next five years represent an opportunity to secure long-term positions in one of the most complex but stable areas of public sector outsourcing.

The custodial market is dominated by two strands of provision: immigration removal centres, operated on behalf of the Home Office, and privately run prisons commissioned by the Ministry of Justice. There are currently seven active immigration removal centres, with two more scheduled to reopen in 2025. Alongside these, fifteen prisons are operated privately by Serco, Sodexo and G4S.

The sector has also seen the arrival of Management & Training Corporation, an American operator with extensive custodial experience overseas, which entered the UK market through the Manston Immigration Processing Centre contract in 2023. These operators deliver full custodial services, within which facilities management is fully integrated.

Although FM is not tendered separately in these environments, it represents a significant proportion of overall spend. In immigration removal centres, hard FM accounts for roughly 15 to 20 per cent of contract value, while soft FM such as catering, cleaning and welfare services adds another 10 to 15 per cent. Taken together, facilities management typically comprises between a quarter and a third of the total contract value. In prisons, the proportion is similar, with FM expenditure typically making up between 20 and 30 per cent of each contract. Given the scale of these long-term arrangements, the FM opportunity within each award runs into tens or even hundreds of millions of pounds.

The immediate focus of attention in 2025 will be the Heathrow Immigration Removal Centre contract, currently held by Mitie. Covering both Harmondsworth and Colnbrook facilities, this contract is estimated to be worth between £200 and £300 million, with FM services accounting for up to £100 million over its lifetime. At the same time, the Haslar Immigration Removal Centre in Hampshire is scheduled to reopen, requiring the appointment of a new operator to deliver both custodial and FM services. In parallel, the Serco contract at HMP Ashfield is approaching renewal after nearly two decades of operation, opening another window for bidders with the capability to manage integrated FM within the custodial environment.

Looking slightly further ahead, one of the largest opportunities in the pipeline is the Amey Northern Prison FM contract, valued at £430 million and expiring in March 2026. Unlike the fully integrated private prison contracts, this is a stand-alone FM agreement covering a regional cluster of public prisons, making it highly relevant for facilities management specialists. Beyond this, Serco’s contracts for the Gatwick immigration removal centres, Brook House and Tinsley House, are currently extended until 2030, but will require re-procurement before the end of the decade. Several G4S prison contracts, including Oakwood, Parc and Rye Hill, also fall into the renewal window over the same period.

The size and duration of these contracts mean that the current cycle is decisive. With terms typically running for eight to ten years in detention centres and ten to twenty-five years in prisons, missing a bid now may mean waiting a decade for another opportunity. For FM providers, these are not contracts that can be chased at the last minute; they require years of preparation, building the right partnerships, securing the necessary security clearances and demonstrating credible custodial experience.

Evaluation criteria in this sector also reward substance over superficiality. The Home Office and Ministry of Justice routinely weight tenders with sixty to seventy per cent of the score assigned to quality, with price making up only thirty to forty per cent. This means that a strong track record in compliance, risk management and mobilisation is often more decisive than headline cost. Clients in this environment are risk-averse and acutely aware of the reputational consequences of service failure. A poorly executed mobilisation or a missed statutory inspection is not a minor issue; it is a potential breach of human rights obligations, a security risk and a likely subject of national press coverage.

The demands placed on FM providers in this market are exacting. Every member of staff requires security clearance, making labour substitution difficult and recruitment more complex. Statutory compliance testing for fire safety, water, electrical and mechanical systems must be delivered on time and without compromise. Preventive maintenance has to be managed within secure operating conditions, often requiring escorts and additional planning. Catering and cleaning teams must operate to standards that stand up to independent inspection. All of this takes place in an environment where reputational risk is unusually high; failures in maintenance or welfare provision are quickly politicised and attract intense scrutiny.

At the same time, the sector is not standing still. New facilities such as the all-electric Campsfield House reopening in 2025 demonstrate the Home Office’s intent to align custodial estates with government decarbonisation goals. This creates additional requirements for FM teams to manage renewable systems, low-carbon heating and more complex energy efficiency regimes. Providers must not only maintain compliance but also support sustainability objectives and demonstrate continuous improvement across contract lifecycles.

For bidders considering entry or expansion, the commercial implications are equally clear. These contracts demand minimum turnover thresholds of £50 to £100 million, alongside performance bonds and extensive insurance provisions. Pricing must account for the additional costs of secure operations, including clearance delays, 24/7 resourcing and higher compliance overheads. Providers who underestimate these costs often find themselves locked into loss-making positions. Conversely, those who build realistic, risk-adjusted models and demonstrate clear value in quality and resilience are well-positioned to succeed.

The custodial FM market is not for the inexperienced. It requires a combination of operational resilience, commercial discipline and deep understanding of the secure estate environment. Yet for those able to meet these demands, it offers long-term, recurring revenue streams, strong client relationships and a platform for growth. The upcoming renewal pipeline, led by the Heathrow IRC retender and Amey’s Northern Prison FM expiry, marks a rare moment of opportunity to establish or expand presence in this specialist sector.

Providers who wish to compete will need to act now. Building the right teams, securing strategic partnerships with custodial operators, aligning compliance frameworks and preparing robust mobilisation plans cannot be achieved overnight. The organisations that succeed in this cycle will be those that start early, invest in preparation and treat mobilisation as a core capability rather than an afterthought.

At Baachu, we combine frontline custodial expertise with specialist facilities management knowledge. This dual capability allows us to support FM providers not just in writing and managing bids, but in building credible commercial models, planning mobilisation strategies and designing operational solutions that meet the exacting standards of the Home Office and Ministry of Justice. If you are preparing to compete for any of the major renewals in the 2025–2030 cycle, now is the time to position your business for success.

Contact us at hello@baachu.com to discuss how we can help you prepare and deliver winning bids in this critical market.

Check out the new article on UK Prison and Detention Contracts 2025 here