Schefflera taiwaniana, also known as the Taiwan umbrella tree, is a beautiful, evergreen shrub with glossy, palmate leaves that provide a tropical appearance. Though native to Taiwan, it can be grown successfully in the UK with a little care and attention. To grow Schefflera taiwaniana in the UK, follow these steps:

1. Choose the right location: Schefflera taiwaniana prefers a sheltered spot with dappled shade or partial sun, as it can be sensitive to harsh afternoon sun. The plant can tolerate some cold, but it is best to protect it from strong winds and frost. Planting against a south or west-facing wall can provide additional warmth and protection.

2. Soil preparation: This plant thrives in well-draining, fertile, and slightly acidic to neutral soil. Amend heavy clay or poorly draining soil with organic matter, such as compost or leaf mold, and coarse sand or grit to improve drainage.

3. Planting: Purchase a small Schefflera taiwaniana plant from a nursery or online supplier. Plant it in the prepared soil, making sure that the top of the root ball is level with the soil surface. If planting multiple specimens, space them at least 6-8 feet (1.8-2.4 meters) apart to accommodate their mature size. Water thoroughly after planting.

4. Watering: Water the plant regularly during the first growing season, allowing the soil to dry out slightly between waterings. Once established, Schefflera taiwaniana is relatively drought-tolerant, but it's a good idea to provide supplemental water during prolonged dry spells.

5. Feeding: Apply a balanced, slow-release fertilizer or an organic fertilizer, such as well-rotted manure or compost, in early spring to promote healthy growth.

6. Pruning: Schefflera taiwaniana requires minimal pruning. You can remove any dead, damaged, or crossing branches in late winter or early spring, before new growth begins. Prune to maintain the desired shape and size, but be cautious not to remove too much foliage, as this can stress the plant.

7. Winter protection: Schefflera taiwaniana can tolerate temperatures down to about -5°C (23°F), but it's best to provide some protection during the coldest months. Apply a thick layer of mulch, such as bark chips or straw, around the base of the plant to insulate the roots. In particularly cold areas or during severe winters, consider using a horticultural fleece or other protective covering to shield the plant from frost and cold winds. Remove the protective covering in early spring as the weather warms up and new growth begins.

By following these steps, you can successfully grow Schefflera taiwaniana in the UK, adding a touch of tropical elegance to your garden. Keep in mind that this plant may be better suited to milder regions of the UK or urban gardens with more stable temperatures. In colder areas, consider growing Schefflera taiwaniana in a pot and moving it to a sheltered spot or indoors during the winter months to ensure its survival.