Home › Cruises › British Isles & Ireland British Isles & Ireland Cruises 4 one-way and repositioning cruise routes in the British Isles & Ireland region. All Sailings Greenwich, England to Tobruk, Libya 14 nights on Viking Mars by Viking Ocean Cruises — 2027-07-08 Tobruk, Libya to Greenwich, England 14 nights on Viking Mars by Viking Ocean Cruises — 2027-07-22 Greenwich, England to Tobruk, Libya 14 nights on Viking Vela by Viking Ocean Cruises — 2027-08-18 Tobruk, Libya to Tilbury (London), England 14 nights on Viking Vela by Viking Ocean Cruises — 2027-09-01