The tenant of Herm Island gained permission from the Post Office to handle mail from the Island to Guernsey. Covers, bearing a 2d Herm Island stamp surcharged 3d and overprinted "BEA Airway letter Service", were taken by motor launch to Guernsey and then flown by British European Airways to Northolt. The first day's mail was delayed by a storm, and bears a "Delayed by Storm" cachet.

Herm Island H3 overprinted in blue. Perf.: Rouletted.