The brewer – best known for brands such as Punk IPA and ultra-alcoholic brews such as Tactical Nuclear Penguin – said it would be suspending sales to national on-trade accounts until it was in a position to keep up with demand.
The company experienced its most successful quarter in the first three months of 2011 and admits it has been taken “completely by surprise” by the boom.
In its latest newsletter it says: “We are not at all happy with our current level of customer service which falls far below the standards we set for ourselves in all aspects of our business.
“We have decided to stop trading with some of our larger customers. We have decided we can no longer sell to UK on-trade national groups and distributors for the time being due to capacity constraints.
“We will however look to develop this part of our business again once we get to our new brewery.”
It added: “To help the situation we are consolidating our customer base and product line-up, adding even more capacity to our current brewery, adding to our operations team, installing new stock management software systems and have also established external warehousing.”
Brewdog expects to move to its purpose-built eco-friendly brewery near Aberdeen next year, and to start construction this autumn.