A cannabis-infused drink is proving a big hit at the Queen’s farm shop near Windsor Castle, England.

According to UK tabloid The Sun, Trip contains 15mg of CBD, 21 calories and retails for £2.19 (A$3.88) for a 250ml can.

It comes in peach and ginger or elderflower and mint flavours.

An ‘insider’ told the paper: “The drinks are quite quirky but very unusual for a farm shop — especially one run by The Queen. They are selling out quick. People pick up about seven or eight each time. The shop started stocking a few months ago and they’ve been really popular.”

The farm shop sells goods from the royal estates and other suppliers.

A spokeswoman said: “The shop sells a number of widely-available soft drinks. Stock varies throughout the year.”

Prior to launching Cannabiz, Martin was co-founder and CEO of Asia-Pac’s leading B2B media and marketing information brand Mumbrella, overseeing its sale to Diversified Communications in 2017. A journalist...