The Ministry of External Affairs (MEA) said such "infringement" of India's sovereignty and territorial integrity is "unacceptable".
source https://www.thehindu.com/news/national/india-lodges-strong-protest-with-uk-over-visit-of-envoy-to-pok/article67738137.ece
source https://www.thehindu.com/news/national/india-lodges-strong-protest-with-uk-over-visit-of-envoy-to-pok/article67738137.ece