Jeremy Mustoe is among representatives from 13 groups in the city who oppose the Brighton Gasworks development. St William, part of the Berkeley Group, wants to build several high-rise blocks of flats at the site between Marina Way, Roedean Road and Boundary Road. The developer intends to transform the area, building between 600 and 700 apartments, 2,000sqm of office space and a public square - and has launched a second public consultation, which runs until March 5. Heritage societies and campaign groups have written an open letter to St William urging the developer to reconsider its plans. They say the area is unsuitable for tall buildings because of its situation on a cliff, its proximity to heritage assets - such as the Grade 1 listed Kemp Town Estate - and the relative height of other buildings.