UK Top Companies List by Market Cap in August 2026

Subsea 7 is a Engineering Services company. It reputation as a collaborative service provider in long lasting client relationships makes one of the most trusted contractors in market which includes oil and gas and renewable energy. The company offshore operations span five decades successfully completing over 1000+ projects. The headquarters is in UK.

Beazley is a Insurance company. The headquarters is in UK.

Smiths Group is a Engineering and Machinery Manufacturing Company. The company products are Electronic components, Medical devices, Heating and ducting systems, Hydrodynamic bearings and Detection sensors. The main industries they serve are medical technology, security and defence, general industry and energy space and aerospace. The headquarters is in UK.

Polar Technology Investment Trust is investment company which invests in technology companies for maximum return.

J Sainsbury is a Retailing Services company. The headquarters is in UK.

J Sainsbury has 1,428 shops as on 2019.

For year ending Mar-2022 J Sainsbury Annual Revenue was 29,895 Million GBP and Annual Net Income was 677 Million GBP.

IMI products go beyond simple components. They deliver sophisticated engineering products and solutions to key industry problems. Breakthrough Engineering for a better world.

They provide specialist, engineered solutions through three separate divisions.

• IMI Precision Engineering
• IMI Critical Engineering
• IMI Hydronic Engineering

Pearson is a Education Services company. It provide content, assessment and digital services to learners, educational institutions, employers, governments and other partners globally. The company technology products are PowerSchool, poptropica, cogmed and statcrunch. The headquarters is in UK.

Meggitt is a Aerospace and Defense Equipment and Components, Energy industry needed equipment manufacturing company. The company products categories are advanced composites, avionics, braking systems, cameras and security, condition monitoring, defense systems, electrical power, engine systems, fire protection and controls, fuel systems, motion control, safety systems, sealing solutions, sensors, thermal management, training systems and aftermarket services. The headquarters is in UK.

Centrica is international energy services and solutions provider focused on satisfying the changing needs of their customers and enabling the transition to a lower carbon future. They supply energy and services to over 26.2 million customer accounts mainly in the UK, Ireland and North America through strong brands such as British Gas, supported by around 9,000 engineers and technicians. The headquarters is in UK.

Weir Group is a Engineer Solutions and Engineering Products manufacturing company. It manufactures mining equipment, oil and gas upstream and downstream related equipment, oil and gas flow control equipment. As of 2022, it had 12,627 employees in over 50 countries serving mining, infrastructure and oil and gas markets. The headquarters is in UK.

Electrocomponents is a Omni channel solutions partner for Industrial Customers and Suppliers. It offer more than 500,000 industrial and electronic products, sourced from over 2,500 leading suppliers and provide a wide range of value added solutions. The headquarters is in UK.

TJ Morris Ltd, trading as Home Bargains is retail sector company with headquarters is in UK.

F&C Investment Trust is a Publicly Traded Investment Fund company. The headquarters is in UK.

Games Workshop Group is a Manufacturer Of Miniature Wargames company. The headquarters is in UK.

Royal Mail is an international business, developing a modern, optimized and efficient network to deliver letters, parcels and new products company. It operate across 40 countries and nation states worldwide including 36 in Europe. The company service on a range of letters and parcels to nearly 31 million addresses across the country and employ around 1,60,000 people across Group of which over 140,000 are in the UK. The headquarters is in UK.

MELROSE INDUSTRIES manufactures components and parts related to below industries

Investec is a Financial Products and Services company. In March 2020, the asset management business was demerged and separately listed as Ninety One. The headquarters is in UK.

Wealth Management Company with headquarters is in UK.