The supermarket's website, everywine.co.uk, currently lists more than 44,000 wines. Operations manager Rob Pearce attributed the increase in internet sales to a growing demand for convenient delivery.
The website, which was launched in 2001, lists between 200 and 300 new wines every week, according to Pearce. Two new members of staff have been appointed to keep up with demand.
Pearce said the company thinks the total number of wines potentially available in the UK is "between 70,000 to 80,000. If they're already here all we've got to do is list them".
Booths does not hold stock for website orders
- instead it sourc es wine direct from suppliers to order. It has also increased its delivery charge from £7.95 to £8.95 to keep up with the
costs of fuel.
Booths is due to open another store in Lytham, Lancashire, in September, bringing the size of its estate - concentrated around the north west of England - to 26 shops.
Meet Booths' beer, wine and spirits team - page 24.