Popular day trips around the UK include Oxford, Cambridge, Bath, Windsor, and Brighton. These destinations offer a variety of attractions, from historical sites and university towns to coastal scenery and vibrant city life.

1. Oxford: Known for its prestigious university, Oxford offers a chance to explore historic colleges like Christ Church and the Bodleian Library. You can also enjoy punting on the River Cherwell or visit the Ashmolean Museum. 

2. Cambridge: Similar to Oxford, Cambridge is a university town with stunning architecture and punting opportunities on the River Cam. Consider visiting King’s College Chapel or Trinity College. 

3. Bath: A UNESCO World Heritage site, Bath boasts Roman Baths, the stunning Pulteney Bridge, and Georgian architecture. You can also visit the Jane Austen Centre or relax at the Thermae Bath Spa. 

4. Windsor: Home to Windsor Castle, the oldest and largest occupied castle in the world, Windsor is a great option for history buffs. You can explore the castle, walk through the town, and even visit nearby Eton College. 

5. Brighton: A vibrant seaside city, Brighton offers a pier, beach, the Royal Pavilion, and a bustling atmosphere. You can enjoy the shops, restaurants, and nightlife.