Sure, here are 50 tips and hacks for travelers going to the UK from India:

1. Check Visa Requirements: Ensure you have the right visa for your trip.
2. Pack Weather-Appropriate Clothing: UK weather can be unpredictable; pack layers and waterproof gear.
3. Research Local Customs: Familiarize yourself with UK customs to avoid cultural misunderstandings.
4. Book Flights Early: Save money by booking flights well in advance.
5. Apply for Travel Insurance: Protect yourself against unforeseen events with travel insurance.
6. Currency Exchange: Exchange currency before your trip or use ATMs in the UK for better rates.
7. Learn Basic Phrases: Know a few common phrases in English for smoother communication.
8. Download Maps: Use offline maps or download apps like Google Maps for navigation.
9. Research Public Transport: Understand the local public transport system for cost-effective travel.
10. Check Voltage Compatibility: Carry adapters for your electronic devices.
11. Pack Medications: Carry necessary medications along with prescriptions.
12. Inform Your Bank: Let your bank know about your travel plans to avoid card issues.
13. Check Roaming Plans: Activate international roaming or buy a local SIM card.
14. Book Accommodation: Reserve hotels or Airbnb in advance for better deals.
15. Research Tourist Attractions: Plan your itinerary and book tickets for popular attractions.
16. Check COVID-19 Guidelines: Stay updated on travel restrictions and health protocols.
17. Pack a Power Bank: Keep your devices charged while on the go.
18. Carry a Universal Adapter: Ensure your electronics can plug into UK outlets.
19. Secure Your Documents: Keep passports, visas, and other important documents safe.
20. Pack Snacks: Carry snacks for long journeys or unexpected delays.
21. Stay Hydrated: Keep a reusable water bottle handy.
22. Know Emergency Numbers: Memorize or save emergency contact numbers.
23. Inform Family/Friends: Share your itinerary with someone back home.
24. Research Local Cuisine: Try traditional UK dishes for a culinary experience.
25. Be Punctual: UK culture values punctuality; arrive on time for appointments.
26. Respect Queues: Wait your turn in queues; cutting is frowned upon.
27. Learn Public Transport Etiquette: Follow rules like giving up seats to elderly or disabled passengers.
28. Use Contactless Payments: Many places in the UK accept contactless cards or mobile payments.
29. Explore Free Attractions: Visit museums and parks that offer free entry.
30. Stay Safe at Night: Stick to well-lit areas and avoid isolated places.
31. Be Mindful of Tipping: Tipping is not mandatory but appreciated for good service.
32. Check Shopping Hours: Know the opening and closing times of shops and markets.
33. Pack a Raincoat or Umbrella: Be prepared for sudden rain showers.
34. Use Public Toilets Wisely: Look for free public toilets or use facilities in cafes/restaurants.
35. Respect Local Wildlife: Admire wildlife from a distance and follow conservation guidelines.
36. Stay Informed About Local Events: Enjoy festivals or events happening during your stay.
37. Use Transport Passes: Consider buying travel passes for unlimited transport in cities.
38. Check Tap Water Safety: In most UK cities, tap water is safe to drink.
39. Be Polite: Say "please" and "thank you" as courtesy is highly valued.
40. Follow Smoking Regulations: Obey no-smoking signs and designated smoking areas.
41. Keep Emergency Cash: Have some cash in pounds for emergencies.
42. Stay Connected: Use Wi-Fi in cafes or public places for internet access.
43. Visit Local Markets: Explore farmers' markets for fresh produce and unique items.
44. Be Cautious with Alcohol: Drink responsibly and be aware of alcohol limits when driving.
45. Respect Privacy: Ask permission before taking photos of people or private property.
46. Check Pet Policies: Understand rules if traveling with pets or visiting places with animals.
47. Plan for Daylight Hours: Daylight hours vary; plan outdoor activities accordingly.
48. Stay Alert in Crowded Places: Be vigilant against pickpockets in touristy areas.
49. Respect the Environment: Dispose of waste properly and recycle where possible.
50. Enjoy Your Trip: Embrace new experiences and make memories!

These tips cover a wide range of aspects, from practical preparations like visas and packing to cultural nuances and safety measures. They're designed to enhance the overall travel experience for visitors from India to the UK.