Department store John Lewis saw total sales over its first half jump 12.9 per cent as the retailer continued to grow across all channels, according to figures released today.

Announcing weekly sales figures for the week ending July 28th 2012, Managing Director Andy Street noted that the first half of the financial year had seen the retailer “substantially outperform a slow market”, adding: While we have added a number of new shops, growth from the established business has been strong.

“We managed to achieve the goal of any omnichannel retailer: growth in both shops and online.”

Over the half year, online sales soared over 40 per cent as customers capitalised on the opportunity to use an improved Click & Collect service allowing shoppers to collect their purchases from a Waitrose store.

Electricals, home and technology saw a 30 per cent boost while fashion grew seven per cent driven by demand for nursery and babywear. Accessories and beauty ranges also performed well, gaining greater market share following an investment in the area in its flagship store.

Fashion‘s strong results were hard won given the changeable weather though homewares also advanced despite difficulties within the market, reporting a six per cent rise over the half period which the department store group attributes to national events as well as core values to offer quality products.

As the retailer‘s expansion drive goes on, refurbishments continue in existing stores with Reading taking the lead ahead of Cheadle and Norwich and Street believes that the company will build on these successes as the Olympic Games get in full swing.

“We go into the second half with confidence provided by strong momentum,” he said.

“We‘re on course to sell huge quantities of London 2012 merchandise this week, and will I‘m sure benefit indirectly from our small part in The Games; a remarkable achievement for our country.”

Sales for the week ending July 28th advanced 6.2 per cent.