Britain's medicines regulator has approved the use of the Pfizer and Moderna vaccines for the 12 to 15 age group.
India moved from the UK's red list travel ban to amber on August 8 and now the Foreign, Commonwealth and Development Office advisory has been updated to coincide with the easing of rules.
If someone develops symptoms of the virus, the government says they should self-isolate and get a PCR test, and stay in isolation until the result comes back.
UK PM Boris Johnson decides not to self-isolate after aide's positive Covid test; sparks Opposition anger
'It's clear the Prime Minister hasn't learned anything from what happened last time he tried to cook up a reason to be above the rules everyone else has to follow,' said Labour party chair Anneliese.
The easing of virus restrictions in England was a major cause of celebration for nightclubs, which have been unable to operate since March 2020.
'I'm grateful that I've had two jabs of the vaccine and so far, my symptoms are very mild,' UK Health Secretary Sajid Javid said.
It comes as most parts of the UK are set to lift all lockdown restrictions from next week of July.
British Prime Minister Boris Johnson has said face coverings would no longer be a legal requirement in England when lockdown restrictions are lifted.
A final decision will be announced on July 12 based on a series of tests, including vaccination rates and the risks posed by new virus variants.
Italian Health Minister Roberto Speranza on Friday said he signed that order as concern builds about a soaring increase of coronavirus cases in Britain involving the delta variant.
Scientists and health officials have called for a delay in lifting all social distance norms in order to allow the vaccination programme to gain further ground
Government spokesman Gabriel Attal said the new measure will be similar to limits imposed in Germany on people travelling from the UK.
All identified cases are isolating or have completed their isolation, and their contacts have been traced and asked to isolate.
The government is to announce that the system will be tested at events from mid-April including the FA Cup Semi-Final and Final at Wembley Stadium, the statement said.
The UK's death toll from the deadly coronavirus now stands at 126,284, around the sixth largest in the world as a proportion of the population.