You cannot add "Cisco - Power cable - IEC 60320 C15 to BS 1363 (M) - AC 250 V - 2.44 m - United Kingdom - for Catalyst 3850-24, 3850-48, 9200, 9300" to the basket because the product is out of stock.
Cisco Systems CAB-SPWR-30CM= StackPower Cable, 30 Centimeter – Compatible with Catalyst 3750-X Series Switches