About

About

The Brodie family

The Brodie family has deep roots in the Brockham area, situated in the heart of the Surrey Hills, dating back to before 1845. Tim Brodie, who grew up just two miles away in Betchworth, and his wife Julia purchased Feltons Farm in 1978. Since 1979, Andy Jackman has managed the family farms, playing a crucial role in their success and development.

In 2000, Tim’s son Alex took over farm operations, and he has since been joined by his own son, Tom. Over the past twenty-five years, the farm business has diversified into processing biomass materials into wood chips and related products. The expansion into biochar production is a natural extension of our existing activities: utilizing locally sourced materials to create valuable products such as biochar and biochar composts. These products not only enhance the quality and yield of our crops and improve our land but also meet the growing demand from both the farming and gardening communities.

From wood to biochar, and on to biochar compost

Processing the wood

We aim to source a good percentage of our wood by managing and coppicing our own woodland, but the great majority of the wood will come from local tree surgeons. We do not source agroforestry wood or any contaminated wood; we take great care to ensure all wood is responsibly sourced and is clean of contaminants.

Once on site, we process the biomass by:

  • screening out the fines – leaves and twigs (which is where the nutrients are concentrated) and the fines are sent to composting.
  • chip any logs and branches,
  • the chip is dried to reduce the moisture content.

We end up with two dried chip materials.

  • Wood chip suitable for turning into biochar and,
  • Oversize chip (between 30mm and 50mm) which is sold.

Brodie Biomass Process Flow

Process Flow

The bulk of the processed wood chip is sent to be pyrolised, and from which we produce our exceptionally high-quality biochar. Our most recent biochar test showed a carbon content of over 86%, an H:C ratio of 0:0.06 and PAH’s (Polycyclic aromatic hydrocarbon which is a measure of contaminants) of less than 4mg/kg.

Milestones:

     September 2025: Brodie Biomass achieved EBC certification as a production facility.

     September 2025:  Our biochar was awarded animal feed plus grade, making us the only facility in the UK to hold this grade for biochar.

    For more information see:       

The key elements of our Biochar process are:

     Quality – achieved by knowing the source of all materials.

     Consistency – blending these wonderful materials to an exacting and traceable standard in every batch.

     Quantity – from mid-September 2024 to the end of August, we produced over 700 tonnes of biochar (dry weight). This achievement has, perhaps unexpectedly, made us the largest producer of biochar in the UK.

Our composting process

The fines (twigs and leaves) are removed from arboreal cuttings to direct nutrients to composting, leaving the carbon-rich trunks and woody matter for pyrolysis.

The fines are mixed with various manures from our farm along with the biochar to create different compost blends.

Each compost batch is monitored and recorded, focusing on moisture, oxygen content and temperature, crucial for the activity of beneficial microbes, nematodes, and fungi. We turn the compost as needed, guided by compost monitors and the earthy smell of good compost. If necessary, we spray the compost with our homemade compost tea to evenly distribute beneficial microbes.

After six months, depending on conditions, we produce a high-quality compost. With thorough knowledge of our feedstock, microbes, and process, we ensure our top-quality compost is among the best in the UK. Our latest batches are  achieving Microbiometer readings averaging over 1,100 ug/g. This is showing an outstanding presence of life in the composts.