Train ticket, London to Edinburgh (Newington EH9)

Train ticket, London Kings Cross to Edinburgh, January 6th 2025 depart 10:45, arrive 15:11, (Lumo) needs valid SENIOR RAILCARD. Lumo has quite restrictive luggage rules. "All customers can bring on board a maximum of ONE Small bag OR Holdall and ONE Medium suitcase (63 x 41 x 27cm). Golf clubs, sports equipment, musical instruments, and sports items that exceed the specified luggage dimensions are not allowed onboard."