Keeping gear dry inside a tent is one of the basic skills of UK camping. It sounds simple until you arrive at camp after hours of rain, with wet boots, a damp pack and condensation already forming on the flysheet.
The first rule is to protect your sleep system. Your sleeping bag and dry sleeping clothes matter more than almost anything else. Keep them in a dry bag or pack liner during the day. Do not unpack them until the tent is pitched and you are ready to set up your sleeping area.
Use dry bags wisely. You do not need one for every item, but key gear should be protected. Sleeping bag, spare base layers, socks, electronics and down clothing deserve proper dry storage. A large pack liner is often more efficient than many small bags.
Keep wet gear out of the inner tent where possible. Boots, waterproof trousers and soaked jackets belong in the vestibule. If you must bring damp items inside, keep them in a separate bag or near the door, away from your sleeping bag.
A tent footprint or small groundsheet section can help organise wet items in the vestibule. It gives boots and muddy gear somewhere to sit without spreading dirt everywhere.
Ventilation is part of keeping gear dry. If you close every vent to stay warm, moisture from breathing and wet clothing builds up inside. Keep vents open when possible, even in cold weather. A small amount of airflow can reduce condensation.
Avoid touching the tent walls. In a small tent, this is easier said than done. Try to keep your sleeping bag away from the inner or flysheet. If your shelter is very tight, consider using a slightly larger tent for wet UK trips.
Do not dry soaked clothing inside the sleeping area unless you have no choice. Wet clothes release moisture into the tent air, which makes condensation worse. If clothing is only slightly damp, you may be able to manage it. If it is soaked, keep it separate.
Store your backpack carefully. If the outside of the pack is wet, do not place it against your sleeping bag. Use the vestibule, a pack cover or a dry bag inside the pack. Many hikers bring only the essential dry contents into the inner tent.
A small cloth is useful for wiping condensation. In the morning, you can wipe the flysheet or inner where moisture has collected. This will not make the tent perfectly dry, but it helps reduce drips and makes packing easier.
Be careful with water bottles and cooking gear. A leaking bottle inside a tent is deeply annoying. Keep bottles upright and away from your sleeping bag. Cooking inside a tent is risky and should generally be avoided because of fire and carbon monoxide danger.
Good habits matter more than fancy gear. Keep dry things separate from wet things. Use the vestibule. Ventilate the tent. Protect your sleep system first. In British weather, that simple discipline makes camping much more comfortable.