The sandwich chain had previously only been available for delivery via Deliveroo, under a partnership that was announced in July last year.
However, it is now available across all three platforms.
As well as a selection of sandwiches, salads and snacks, customers are able to order a variety of essential grocery items including milk, butter, and tea.
Last week Pret reopened 10 of its London stores, having temporarily closed them all last month as a result of the ongoing Coronavirus crisis.
Serving limited menus, all 10 sites were chosen because of their proximity to hospitals in the capital, and include locations in Vauxhall; Bloomsbury; Tooting; South Kensington; and Fitzrovia.
In total 160 furloughed staff members have volunteered to run the stores.
Yesterday (23 April), it was reported by The Financial Times that Pret is seeking a “€100m urgent loan from global banks” to navigate it through the Covid-19 pandemic.
According to CEO Pano Christou, the company, which has more than 500 UK sites, has enough cash to see it through the current lockdown, but needs funding for a “test and learn stage” to develop new systems and products for after the virus.
He told the FT: “As a business coming out of this, we might look different, possibly smaller. I wish I could tell you in six months what size of Pret will be. What I can tell you is that Pret will still be there.”
He added that Pret had not attempted to access any government loan schemes.