The subscription rates for RIBA Chartered practices in 2009/2010 are based on the total number of employees in your practice (see how to apply |for more details).
2009/2010 subscription rates
Band 1 - sole practitioner £110
Band 2 - 1 to 5 £145
Band 3 - 5 to 10 £190
Band 4 - 10 to 50 £270
Band 5 - 50 plus £395