Reciprocity has been a guiding principle in India's approach to cross-border mobility. Examine with reference to India–UK relations since the 1970s.

Reciprocity means giving another country's citizens the same treatment that country gives your own. It has guided India's handling of mobility with the UK. Over the years it moved from mirroring restrictions in the 1970s to negotiating access on both sides after 2021.

Phase I: Defensive reciprocity (1970s)

• Unequal mobility: the UK's Immigration Act, 1971 limited the right of abode to people with ties to the UK, such as residence or ancestry. Commonwealth membership alone no longer gave the right to live in Britain [2].
• India's response: in October 1976, MoS Home Affairs Om Mehta said entry permits for visitors from Commonwealth countries that restrict Indians were "under active consideration" [1].
• Asymmetry: Indians going to the UK needed permits, while British nationals and passport-holders entered India freely [1].
• Targeted, not blanket: the plan covered only members that restricted Indians. It asserted sovereign equality without hurting friendly states [1].

Phase II: Negotiated reciprocity (2021 onwards)

• Migration and Mobility Partnership (4 May 2021): an agreement to make movement of students and professionals easier, alongside cooperation against irregular migration [3].
• Young Professionals Scheme: 3,000 visas a year each way for graduates aged 18–30, who can live and work in the other country for two years [4].
• India–UK trade deal: the UK agreed to impose no numerical limits or Economic Needs Test on covered Indian professionals. Mobility was traded for market access [5].

Limits of reciprocity

• Form, not weight: the 1976 permits would have affected British visitors. The UK rules had taken away Indians' right to settle, so the response did not match the harm [1][2].
• Weak leverage: mirror-image rules work only when the other side needs something. That is why the 1976 plan carried symbolic value rather than real bargaining power.
• Small quotas: fixed quotas only ease the right-of-abode barrier for some groups. They do not undo it [2][4].

Reciprocity has stayed constant, but its purpose has changed. In the 1970s India used it to show equality. Today it uses its economic weight to win access. Going forward, India should build on the MMP and the trade deal: widen professional categories, push for recognition of qualifications and protect its diaspora. Mobility can then rest on sovereign equality as a two-way opening.