Bundle promotions and an increasingly popular app helped Domino's Pizza serve up over 1.4 million pizzas a week in Britain and Ireland in 2014, helping send profits up 15%. 

A strong start to 2015 with like-for-like sales up 9.5% in the first eight weeks also pleased investors, with shares in Britain's biggest pizza delivery firm up sharply higher today. 

Domino's said 8.2 million customers had downloaded its app in 2014, up from 3.2 million at the start of the year, with others ordering the likes of its Mighty Meaty and Veggie Supreme pizzas direct from their Xbox consoles. 

Sales at UK stores open over a year rose 11.3% in 2014, the firm said, with a revamped app and website pushing online orders up to 70% of delivered sales year-on-year. 

Full-year underlying pretax profit rose to £54.8m, slightly ahead of analysts' average forecast of £54m. 

"It has been another strong year for Domino's," its chief executive David Wild said, adding the group would continue in 2015 to invest online, where customers order more frequently, spend more per visit and cost less to service.

In the fourth quarter of this year Domino's will trial a one-touch ordering service, where customers will be able to click just once to repeat a previous order, paying for it instantly using stored details. 

Domino's, which has over 800 UK stores, said 2014 sales had also grown at its smaller Irish and Swiss businesses but had struggled in Germany.

Expansion plans there are faltering while it works through wrong store formats and menus and higher wages. 

German operating losses reduced significantly in the second half of 2014 year-on-year, however, finishing at £7.3m overall. 
Wild said losses would fall again in 2015 but that the German business would not break even this year.