Garden Lime (Calcium Carbonate)

https://www.bhgsltd.co.uk/ProductGrp/horticultural-products/retail/soil-additives/vitax-garden-lime

Lime is an important source of calcium for plants and ensures strong growth and fruit and leaf quality. Liming garden soil neutralises the pH of the garden soil which reduces the occurrence of Clubroot. It encourages greener foliage improves nutrient uptake strengthening plant roots and stems and helps break down heavy soils. Lime is usually added in winter for annual crops before digging, enabling the lime to take effect before planting out. If Clubroot is a problem in your area it pays to be prepared!

Bone Meal 10 Kg

https://www.marshalls-seeds.co.uk/bone-meal-bucket-x1-pid2928.html

Slow-release, organic source of phosphorous to promote strong root growth and the healthy establishment of plants. Ideal when planting trees and shrubs and for promoting strong healthy root growth in fruit, vegetables and other plants. Can be applied every 4-6 weeks throughout the growing season - from February to the end of October. 

Chelated Trace Element Mix

https://www.lssystems.co.uk/fertilisers-growing-media/trace-elements-chelates

A wide range of chelated iron, other single metal and multiple micronutrient mixtures, including complex mixtures of six trace elements. Use as a root and foliar treatment for all plants to prevent and cure trace elements deficiencies.