Yes — British passport holders need a visa for India, and can apply online (eVisa).
e-Visa at indianvisaonline.gov.in: 30-day ($25), 1-year ($40), 5-year ($80) tourist e-Visa. Most nationalities eligible. Nepal & Bhutan citizens enter free.
Yes — British passport holders need a visa for India, and can apply online (eVisa).
$25–80 USD. Fees change, so confirm on the official site before paying.
Usually up to 30 days per visit for tourism.
Typically: 3–5 business days.
From the Passport Index community dataset, not yet checked against an official source. Confirm on the official site:
Entry rules change. Always confirm with the official government source before you travel.