Profits from Sunbelt, its US business, rose 19% to £35.9m, cementing its position as one of America's top five equipment rental groups. But the A-Plant arm in the UK suffered a 4.9% fall in operating profit to £11.6m as margins were squeezed. Burnett said the market was highly competitive, adding that signs of a decline in the Irish economy had also taken a toll on revenues.