Deputy chairman Terry Blyth will assume Valentines role, with sales and marketing director Steven Munday taking charge of the UK market.
Valentines future plans are unknown.
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"And here's me thinking they bought the Docklands Light Railway."
"15 x members? Why don't they throw their lot in with the Strategic Mailing Partnership (SMP) and get a louder voice?"
"Some forty plus years ago I was at a "sales" training seminar and got chatting to the trainer after the session had finished.
In that conversation he told me about another seminar he had..."
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