Waitrose's director of e-commerce has revealed that despite a barrage of complaints about its relaunched website, it is to push ahead with extra features such as brand reviews and recommendations.

Angry shoppers attacked a raft of speed and navigation-related teething problems on the website, which was relaunched last month.

"Well, that's me done with Waitrose after two years of online ordering, 100+ orders, following on from five years of shopping in-store," said MiaPlacidus, a poster on the site's forum this week.

Another, Sarah by the Brook, blasted: "The search facility doesn't work well enough to find things reliably, there's no multi-search function, the pages are still woefully slow and then the order picker doesn't read the flipping notes."

E-commerce director Robin Phillips admitted that although some improvements had been made in recent weeks to website features such as lists, the log-in facility, editing orders, the forum and the recipe search facility other problems would not be resolved immediately, but rather within "the next couple of weeks".

The speed at which pages render is currently one of the major problems on the website, which has more than 500,000 hits a week. Search functionality, functionality around lists and "more intuitive recommendations" are top of the problem-solving agenda, he revealed. The site would eventually feature brand reviews and recommendations, plans prompted by the popularity of travel review websites, such as tripadvisor.co.uk, he added.

Other features yet to be added include an option for shoppers to add more than 12 items from previous order lists to trolleys and the display of items by aisle and shelf, and then alphabetically. "We are using social media to fix glitches, which will be a powerful medium for us," Phillips added.

Meanwhile, Waitrose has begun a trial of one-hour delivery slots from eight of the 139 branches that offer online delivery.