AG BARR chief executive Roger White signalled possible interest in the Lucozade and Ribena brands which are being sold by pharmaceuticals giant GlaxoSmithKline, as the Irn-Bru manufacturer reported strong trading.

And Mr White claimed yesterday that AG Barr's trading performance was ahead of rival Britvic, the Hertfordshire-based company with which the Scottish soft-drinks group attempted unsuccessfully to merge.

The initial merger deal was scuppered earlier this year by an unexpected referral to the Competition Commission, which eventually cleared the combination.

AG Barr this month walked away from a fresh attempt at a tie-up, after offering Britvic slightly improved terms for a merger and having these rejected.

Asked whether AG Barr might be interested in buying Lucozade and Ribena, Mr White replied: "GlaxoSmithKline has publicly said they will sell that business before the end of the year. As far as I am concerned, the process hasn't started (in terms of) information being available."

He added: "We would always be interested in businesses and brands we think we can add value to. We will wait and see what happens."

It has been estimated that the Lucozade and Ribena brands could fetch more than £1 billion.

Mr White declined to be drawn on how AG Barr might finance any move for Lucozade and Ribena.

He said: "It is very early days. As far as we are aware, the process isn't due to kick off until September."

AG Barr yesterday reported that, in the latest six months, it had "continued to grow well ahead of the market".

It said it anticipated sales revenue of about £127.5 million in the six months to July 28, the first half of its financial year. AG Barr noted this would be 4.9% higher than in its previous first half.

The company revealed its sales growth had accelerated sharply in the latest three months, citing the positive impact of marketing initiatives and good weather from late June onwards. It said it anticipated that sales in its second quarter would be up 9.8% on the same period of last year.

Mr White highlighted strong performances by Irn-Bru, Rubicon and the Barr range of carbonated drinks.

Asked how AG Barr's trading performance compared with that of Britvic, which also published an update yesterday, Mr White highlighted a fall in sales volumes at his company's Hertfordshire-based rival.

Britvic said its sales volumes both in Great Britain and overall were, over the first three quarters of its financial year to September, down 3.3% on a year earlier.

However, the Britvic trading period is not as up-to-date as that of AG Barr, and does not include some of the recent period of hot and sunny weather.

Mr White, who said about half of AG Barr's year-on-year growth in sales revenue in its first half had come from volume and about half from value, acknowledged Britvic's trading period was not entirely comparable.

However, he added: "I think their (Britvic's) year-to-date volumes were down 3%, something like that. Whatever way you look at it, our growth is ahead of theirs, and particularly when you look at the volume side of things."

In its financial year to date, Britvic's revenues in Great Britain were up 1.3% on a year earlier. Its overall revenues were up 1.5%.

AG Barr said yesterday that its profit margins in its first half had improved relative to last year.

Asked if he believed AG Barr's latest trading statement showed it did not need Britvic as a merger partner, Mr White replied: "I don't think we needed Britvic 12 months ago, when we first started the process (of looking at a merger) and we don't need them now. It was an opportunity to create value for everybody's shareholders, and sadly it didn't happen.

"We didn't need them (Britvic) either time."

Mr White added: "We and our shareholders are quite happy with AG Barr continuing to grow and develop as it was then, and it is still now, as hopefully these most recent figures show."

Shares in AG Barr fell 22.5p to 535p yesterday, in spite of the sales growth, giving the group a stock market worth of about £625m.

Investec, AG Barr's broker, forecasts the group will make underlying pre-tax profits of £37.5m in the year to next January, up from £35m in the prior 12 months.

AG Barr, based at Cumbernauld in North Lanarkshire, employs about 970 people.