Admiral’s turnover rose six per cent to £1.17bn, but it admitted the pace of UK customer and price growth slowed due to “premium rates falling and competitors seeking to add market share”.
The firm, which also operates as Bell, Diamond and Elephant, had 3.5m cars on its books at the end of June, up from 3.15m a year ago.
Profits at Admiral’s price comparison site Confused.com rose 2.4 per cent to £8.4m, helping to offset losses in the international car insurance business, which more than doubled to £8.9m.
“We think the UK business is at an inflection point and with the drag from the international businesses yet to reverse we see diminishing earnings growth,” said Numis analyst Nick Johnson.
Shares fell 2.8 per cent to £11.62, underperforming the FTSE 100.