Vitax

https://www.littlefieldsfarm.com/vitax-perlite

Perlite is a naturally occurring volcanic rock that, when heated to high temperatures, produces lightweight micro-porous granules.

Perlite can be used for seed starting, rooted cuttings, potting-on or planting out.  If using for seed starting, Perlite’s structure maintains moisture and temperature levels. When mixed with compost, Perlite holds water and nutrients in the compost, producing a healthier growing media.

Garden Goodies

https://www.garden-goodies.co.uk/landscaping/perlite-vermiculite.html

Both vermiculite and perlite are inorganic products, both are relatively sterile, and both are often used as soil additives.

Vermiculite is a soft, spongy material made from super-heating mica.

Perlite is a hard, highly porous material made by super-heating volcanic glass.

LBS Buyers Guide

https://www.lbsbuyersguide.co.uk/medium-grade-perlite

Here at LBS Horticulture, we are proud to supply a range of horticultural products, suitable for all kinds of professionals through to hobby gardeners. Whether you're a professional farmer or landscaper gardener looking for quality supplies and great service, or you're looking for some quality floristry supplies, you'll find it right here at LBS.

Marshalls

https://www.marshalls-seeds.co.uk/perlite-10ltr-bag-pid5165.html?

Perlite is an ideal compost additive as it helps to retain air in the compost which is essential for healthy root development.

It helps to create an optimum balance of air and water, which makes water logging almost impossible and minimises damage to roots when transplanting. It is ideal for use when sowing seeds, rooting cuttings, potting on and container growing.

Scot Plants Direct

https://www.scotplantsdirect.co.uk/growing-needs/fertilisers-soil-improvers/perlite-vermiculite

Horticultural Perlite has the excellent property of improving soil aeration while retaining the moisture and nutrients necessary to feed roots, cuttings and seeds for faster growth. Sold in medium & fine grade.

Available in 100 Litre Bags from Sinclair Professional at wholesale prices which include VAT.