WITH regard to Putin and Brexit ( Courant Letters, April 22), we do not depend on the European Union for our security. Instead we are founder members of NATO, along with the United States, Canada and various European countries,

Our police and intelligence services are world class and work with countries outside the EU, as well as within it. Menaced by terrorism and international criminal gangs, the EU will be only too glad to continue to benefit from Britain’s expertise.

LORNA SLATER,

Bardon Mill