The Mayor and Greater London Authority (GLA) have published their proposals for the introduction of the Business Rate Supplement from April 2010.  This is to finance the GLA’s agreed contribution of £4.12 billion towards the estimated total overall cost of £15.9 billion required to fund the Crossrail project. We are advised that a summary explanatory leaflet will be sent by post, before the end of August 2009, to all rate payers who could be liable to pay the business rate supplement.