MARKETING MAGAZINE’S latest telemarketing league table shows the industry continuing its explosive growth. The top fifty telemarketing companies report an aggregated turnover of £510m - up 29% on 1998. Top of the heap is Post Office subsidiary Subscription Services with sales of £75.2m, well ahead of BT’s Connections in Business in second place with £67m. Last year’s top dog, US-owned Sitel Corporation, is relegated to third place with £64.3m. The largest sector within the industry is inbound call handling, worth £339m annually; whilst outbound accounts for £108m, and fulfilment and consultancy the remainder.