Based in Brighton, East Sussex, ARCH-angels Architects produce beautiful, sustainable and affordable architecture. We always work closely with our clients to provide the most suitable designs possible. Whether it's a new-build, conversion, extension, refurb or renovation, we've got it covered. Areas serviced: UKwww.aaarchitects.co.uk128 Edward Street, BN2 0JL

At CDA, design is about more than the function and form of our buildings we are just as concerned with delivery. As one of the UK's top performers, we work to deliver major projects on time and budget, regardless of constraints. We've worked hard to earn our reputation for solving complex planning and design issues on different sites.www.cda-group.co.ukPelham Ho/25 Pelham Sq, BN1 4ET

The practice currently consists of 24 people, four Partners who are Chartered Architects, another three Chartered Architects, Architectural Assistants and Technicians, an Interior Designer, a Quantity Surveyor and an administrative team of Bookkeeper, Secretary and Office Assistant. The Practice also offers the services of Planning Supervisor under the Construction (Design Management) Regulation1994, arranging Party Wall agreements, and Disabled Access Consultancy.www.drparchitects.co.uk87-88 Upper Lewes Rd, BN2 3FF

KTA Limited was formed in 1989 and today is an established firm of architects and designers involved in a wide variety of architectural work throughout the UK and Europe. The architect as a skilled designer can contribute flair and imagination when investigating the feasibility of your requirements and in developing design solutions.www.ktaltd.com50A Gloucester Rd, BN1 4AQ

We are trained architectural designers with years of experience in the building industry and a vast amount of expertise in planning policy and building design, which means you will get the highest quality solutions to your need for more space.www.designzone.uk.comPelham House/25 Pelham Sq, BN1 4ET

Camillin Denny Architects is a young and highly motivated company undertaking unique architectural projects both in the UK and internationally. It is a company combining innovation and progressive design skills with wide practical experience and detailed construction knowledge. The company was founded in 1997 working on high quality bespoke refurbishments on residential buildings, many of which were listed, requiring particular attention to detail and close site supervision.www.camillindenny.com8 Foundry St, BN1 4AT

A&Q Partnership provides architectural and design solutions from offices in London, Brighton, Bourne End and Dorchester. Early projects included regeneration of existing pre-war residential estates in what was then the emerging Docklands area. Current projects include extensive residential developments for a variety of tenures.www.aqp.co.ukShaftesbury Court/95 Ditchling Rd, BN1 4ST