Choose the position before the variety
A bright British garden can still have a cold, exposed corner. Observe your proposed tomato site in the morning and afternoon, and after windy weather. A sheltered position is useful only if you can also reach the plants for watering, tying and harvesting.
Match the plant to its support
Check whether the variety is a bush or cordon type. Plan the correct support before the plant becomes heavy; do not assume that all tomatoes need the same pruning. Leave enough room to inspect leaves and fruit without pushing neighbouring plants aside.
Prepare for an ordinary working week
Place the watering point and supplies where they are easy to use. Containers need a dependable routine, especially when conditions change. Test how the growing medium drains, and avoid leaving roots standing in collected water. Follow variety-specific feeding instructions rather than adding several products together.
Review the site during the season
Keep a simple note of wind damage, drying and uneven growth. If one location repeatedly struggles, changing the position or growing fewer plants may help more than another input. Use local forecasts to guide protection, not a nationwide planting date.