The UK heat network sector has reached a defining moment. As of 27 January 2026, Ofgem is formally the sector regulator. This marks the transition of district heating from an unregulated niche into a formal infrastructure asset class. While the Energy Act 2023 provides a bridge via deemed authorisation, the
The defence sector has traditionally struggled to attract investment, often clashing with private equity mandates and rising ESG pressures. That is beginning to change. A broader range of investors is now showing interest, particularly in the complex supply chains that support defence and related industries such as automotive and telecoms.
Subsea cables are the unseen infrastructure powering 95% of global internet traffic and connecting the fast-growing web of offshore wind, interconnectors, and transmission grids. At Calash, we are tracking how this critical network is hitting a breaking point. As networks expand, so do the risks. Telecom cable failures cost $1–3m
The UK’s electricity market is undergoing significant structural changes. We’re seeing a clear trend: balancing actions are increasingly required to manage the system, and the share of negatively priced periods has tripled since 2022, signalling that inflexible supply is exceeding demand. This means storage, demand-side flexibility, and smarter networks are
Calash supports Davidson Kempner on its Acquisition of Swire Energy Services (SES)
This presentation outlines an approach to segment and map sustainability-linked investments in the midmarket, offering insights into these sub-themes’ growth potential and opportunities. It will also highlight Calash’s expertise in sustainability-related investment advisory and strategic support.
Gaining insight into your customers and the markets you cater to is crucial for making informed decisions that sustain loyalty and identify new revenue streams. Enterprises employ Voice of the Customer (VoC) strategies to help enhance customer understanding and identify pain points and opportunities for deeper collaboration. Using third-party research
Gaining insight into your customers and the markets you cater to is crucial for making informed decisions that sustain loyalty and identify new revenue streams. Enterprises employ Voice of the Customer (VoC) strategies to help enhance customer understanding and identify pain points and opportunities for deeper collaboration. Using third-party research
Environmental due diligence will identify gaps in environmental regulatory compliance and poor operational practices that are potentially harmful to people and the planet, and negatively impact on the reputation of a business. What is an environmental due diligence exercise? Environmental due diligence is an evolving discipline but always starts with
No one knows your business as well as you but there is a limit to what a management team can achieve on its own. Often, internal resource constraints mean opportunities are left on the table. Access to data sources, market intelligence and referencing, and third-party technical and commercial strategy support
Calash is pleased to announce that it provided commercial due diligence support to Averroes Capital on its acquisition of Glacier Energy, a specialist provider of products, services and engineered solutions for renewable and conventional energy markets.
Calash is pleased to announce that it provided commercial due diligence to MML Ireland on its investment into Mainport Shipping, an integrated marine services business that charters survey support vessels to global geo data specialists in the international offshore energy sector, alongside Irish Mainport Holdings (IMH).
Calash is pleased to announce that it provided vendor commercial due diligence to ASCO, a global provider of multi-site integrated supply base operations to the energy industry, in support of its sale to UK-based private equity investor Endless LLP.
Calash is pleased to announce that it provided commercial due diligence to the Scottish National Investment Bank on its investment into Utopi, a leading real-estate data analytics platform.
Calash is pleased to announce that it has provided environmental and commercial due diligence to private equity investor Chiltern Capital on its investment into Empteezy, a designer, manufacturer and distributor of industrial safety products and solutions, focussed on environmental protection, spill prevention and EV battery storage.
Electric vehicles are becoming a normal part of our everyday lives, but the adoption of electrification technology across heavy transportation could take a different path to decarbonisation – how applicable is battery technology to larger vehicles? How quickly will electrification find adoption across freight and supply chains?
Calash Advises Turner Iceni Group on Market Review of its Condition Monitoring and NDT Inspection Services
Calash is pleased to announce that it has provided technical and commercial due diligence in relation to the merger of UK-based environmental technology company Arq and Advances Emissions Solutions (ADES).
Calash is pleased to announce that it has provided commercial due diligence services to WestBridge, a leading UK small-cap private equity firm. WestBridge saw the opportunity to combine its existing investment in APEM with GoBe Consultants, an offshore wind planning and environmental consultancy.
Calash is pleased to announce that it provided commercial due diligence to ICR, a Graphite Capital backed business, on Sky Futures, a leading provider of unmanned systems and robotic led inspections.
Calash is pleased to announce that it has provided vendor commercial due diligence services to the owners of Wood Thilsted, a global offshore wind engineering consultancy, which has successfully gained a minority investment from Inflexion, a leading mid-market private equity firm.
Calash supports Catle Mill on its acquisition of Manor Renewable Energy
