I cut through mine. 9" grinder, 3x 6mm drill holes all the way through the bricks so they split off neatly, pushed the batts as far as I could into the existing cavity.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local