There are two main types of smoke alarm tech, says Raman Chagger, principal consultant at BRE, the Building Research Establishment. Ionisation-based systems use a tiny amount of radioactive material to charge, or ionise, particles in the air which flow between two small plates. Should smoke interrupt that flow of charged particles, the alarm goes off.
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Now, the business averages $12,000 per month and is projected to see $400,000 in annual revenue.
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Gaby Hinsliff may be right to link the current lack of starter jobs to recent increases in minimum wage and national insurance costs for employers (Do you remember your first crappy job? Today’s young people would wish for half your luck, 20 February). But there’s more to it.
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