= 78 / HADFIELD CAWKWELL DAVIDSON Last year: 80 Number of architects: 34 Female architects: 18 per cent The practice reports 'a spectacular year of growth' although its AJ100 performance is modest. The firm admits it's trying to break away from its 'solid commercial portfolio' and carve a niche within sustainability - it claims to have completed Sheffield's first BREEAM 'excellent'-rated office development.
= 78 / MICHAEL LAIRD ARCHITECTS Last year: 80 Number of architects: 34 Female architects: 29 per cent Restoration of Robert Adam's final masterpiece, Dalquharran Castle in Ayrshire, plus office developments in Edinburgh and several large urban housing projects round out Michael Laird's prosperous year. New European schemes include an Athens city centre redevelopment and a project in Dublin. Managing director Brian Lightbody claims turnover continues to grow significantly, and a number of fresh associate directors and associates are on board.
= 78 / POWELL DOBSON ARCHITECTS Last year: 93 Number of architects: 34 Female architects: 15 per cent What better way to celebrate a ruby (40th) anniversary than a 15-place leap up the charts? This success is built on a reputation for imaginative sustainable developments. The firm's 2006/7 showcase includes new offices for the Welsh Assembly Government and the £110 million Bluestone holiday village in Pembrokeshire.
= 81 / DONALD INSALL ASSOCIATES Last year: 59 Number of architects: 33 Female architects: 18 per cent Let's hope the practice doesn't regret taking on the design of the Queen Mother's memorial in central London - some might regard this as a poisoned chalice after the Diana Fountain Memorial row. Insall will doubtless hope its vision will also escape the snags that forced costs on its Battle of Britain monument to rise.
= 81 / GLENN HOWELLS ARCHITECTS Last year: N/A Number of architects: 33 Female architects: 15 per cent A crowd-pleasing Savill Garden Visitor Centre in Windsor and striking Rotunda building in Birmingham fuelled a 20 per cent growth in turnover.
It also submitted the world's first rotating tower, in, rather unsuprisingly, Dubai.
= 81 / POZZONI DESIGN GROUP Last year: 100 Number of architects: 33 Female architects: 15 per cent Having arrived last year at the very bottom of the AJ100, Pozzoni has soared up the charts to 81st position. Now in its 35th year, the firm is venturing away from public-sector sports facilities and care homes into education, retail, office, housing and mixed-use regeneration. And it's all systems go with its £150 million Project Jennifer in Liverpool - now revised after a CABE grilling.
= 81 / WIMBERLY ALLISON TONG AND GOO Last year: 53 Number of architects: 33 Female architects: 27 per cent A sharp tumble down the ratings reflects a relatively static 12 months for this hospitality and leisure specialist. Playing to its strengths, the firm secured a string of hotel and resort commissions in Africa and Eastern Europe, and its Ocean Village Marina Hotel in Southampton gained planning permission. The practice is hoping to tee off this summer with a substantial clubhouse and golf-course development in Scotland for billionaire Donald Trump.
= 85 / PENOYRE & PRASAD Last year: 63 Number of architects: 32 Female architects: 34 per cent A good year for Sunand Prasad, who became president-elect for the RIBA, doesn't necessarily mean a good year for the firm. Although Penoyre & Prasad saw its Moorfi elds Children's Eye Hospital open this year, as well as its library extension at Portsmouth University, the practice has still dropped 22 places since 2006.
= 85 / S&P Last year: 77 Number of architects: 32 Female architects: 13 per cent S&P's Olympic-sized heated swimming pool in Hackney is finally complete. Its £3 million Brighton International Arena has been delayed after the developer admitted proposals were not ready for planning. But builders are limbering up to start work on the 2012 Aquatics Centre designed in collaboration with Zaha Hadid.
= 87 / ARCHITECTS CO-PARTNERSHIP Last year: 63 Number of architects: 31 Female architects: 13 per cent Since the 1980s, Architects Co-Partnership has broadened its public-sector focus and embraced PPP, particularly schools PFI, with a vengeance. With planning pending on the first phase of Lewisham's £180 million Building Schools for the Future programme, the firm bagged a coveted spot on the Academies Framework, with contractor Kier, and a couple of gongs for its Bishops Park College for Clacton PFI.
= 87 / ASSAEL ARCHITECTURE Last year: 93 Number of architects: 31 Female architects: 26 per cent Assael Architecture slid down the Sunday Times' '100 Best Small Companies To Work For' list this year; it was number seven in 2006 but has dropped 34 places to 41st. Better news on the AJ100, where it has climbed six notches. John Assael is leading a chorus of RIBA council members questioning why large firms, such as those in the AJ100 top 10, are not getting involved in council matters.
= 87 / TAYLOR YOUNG Last year: 72 Number of architects: 31 Female architects: 16 per cent A 15-place fall for this practice, which used MIPIM to announce the opening of a new Manchester-city-centre operation. Current proposals include a revamp of central Carlisle and housing near to Manchester's Grade II*-listed Gorton Monastery - the city's 'answer to the Taj Mahal'.
= 87 / YRM ARCHITECTS Last year: 72 Number of architects: 31 Female architects: 16 per cent Having settled into its new King's Cross hub, the firm continues with Heathrow Terminal 5 and is preparing design guidelines for the long overdue Crossrail London rail link. YRM is enjoying enormous success in India, where it has secured aviation, education and commercial projects in Delhi, Mumbai, Hyderabad and Rajasthan.
= 91 / FEILDEN + MAWSON Last year: 83 Number of architects: 30 Female architects: 27 per cent The firm has slipped eight places. Its gender ratio hovers at the same level as last year but partner Gordon Montague says the aspiration is a 50/50 balance. Wins include a project at Brno University, Czech Republic. It is also designing a rapidtransport system in Nigeria.
= 91 / LYONS + SLEEMAN + HOARE Last year: 72 Number of architects: 30 Female architects: 7 per cent This firm is well-known for generous staff rewards like three-day weekends. But gender equality is rather weak; just 7 per cent of staff are female. Notable completions include a primary school in West Bromwich, funded by Tesco, a police station, Slipper Baths in Lincoln, a new restaurant between two Grade I-listed buildings, and a low-energy office building in south-west England.
= 91 / PAUL DAVIS + PARTNERS Last year: N/A Number of architects: 30 Female architects: 33 per cent Paul Davis hit out at UK visa policies which cost him two Russian architects working on an £80 million St Petersburg masterplan. The practice is also expanding its Chelsea office.
= 91 / THE HARRIS PARTNERSHIP Last year: N/A Number of architects: 30 Female architects: 13 per cent With more than 100 staff and offices in Wakefield, Milton Keynes, Manchester and Reading, the Harris Partnership claims to 'specialise in all building sectors'.
This fresh face to the AJ100 has an extensive portfolio of UK clients, from Tesco and B&Q to the Department for Transport and English Partnerships. Although Harris Partnership has 30 architects on its books, its female representation remains low at just 13 per cent.
= 91 / THE TOOLEY & FOSTER PARTNERSHIP Last year: 85 Number of architects: 30 Female architects: 27 per cent Projects won in 2006 include redeveloping Canterbury High School, an East Sussex retail/housing project and a 12-storey residential tower for east London. A major extension to Bromley's Glades Shopping Centre is on site and its Wembley Arena was voted Best International Arena at the 18th Concert Industry Awards. Offi ces for Portman Estates and a Forest School sports complex have also completed.
= 96 / GENSLER Last year: 96 Number of architects: 29 Female architects: 31 per cent A run-in with CABE over its Blackpool super-casino was followed by rejection in favour of Manchester. Schemes such as Kent's £1.8 billion schools template programme boosted turnover by 52 per cent.
= 96 / JOHN THOMPSON & PARTNERS Last year: 93 Number of architects: 29 Female architects: 34 per cent This urban-design specialist has redeemed last year's 14place slide under new managing director Marcus Adams.
Its Edinburgh studio eclipsed the London base, recording a 30 per cent increase in staff. The limelight could shift south as the firm takes its place on English Partnership's four-year 'mega' framework and begins the £200 million Craylands Estate project in the Thames Gateway.
= 96 / ERIC PARRY ARCHITECTS Last year: N/A Number of architects: 29 Female architects: 24 per cent Eric Parry is a new face to the AJ100, despite being a Stirling Prize runner-up. Earlier this month, planning inspectors saw no 'compelling justi-cation' for a 24-storey building next to Tate Modern and refused permission. This month also saw the unveiling of an extension to the Holburne Museum of Art in Bath.
= 99 / AVANTI ARCHITECTS Last year: N/A Number of architects: 28 Female architects: 36 per cent Avanti marked its 25th anniversary year by winning a raft of UK health education schemes. This fast-growing practice - turnover has grown 290 per cent over five years - gained planning consent for a £340 million reworking of Ulster Hospital and the Royal Liverpool Children's Hospital at Alder Hey. It now awaits planning on its first Procure 21 project - a low-energy academic centre for North Bristol Trust.
= 99 / AWW ARCHITECTS Last year: 89 Number of architects: 28 Female architects: 18 per cent Having gained just one architect, AWW has failed to achieve last year's commitment to aggressive recruitment. AWW continues to win civic and commercial schemes and has completed several offices and masterplanning projects. In its native Bristol, the firm has bagged two Civic Society Awards for mixed-use and housing schemes.