Trade body the Brick Development Association (BDA) said its members had about three months of supplies in stock at their factories and in builders merchants.
The assurance came as a Build UK survey reported that member companies were finding it hard to source bricks alongside plaster, plasterboard, insulation materials and aggregates.
Keith Aldis Chief Executive of the BDA said: “We are keen to see that all clay brick users in the UK construction space, from architects and specifiers to Tier 1 contractors and smaller builders, have access to exceptional quality UK made clay bricks at a price and quantity they can afford.
“Our members continue to ramp up production and as a result, with current stocks standing at or around 480m, there are plenty of clay brick to go around.”