Jon Searles' photos with the keyword: 91106

Here's another shot of "East Lothian," allowing you to see the number and name.

Services from London King's Cross to Leeds, while not as long a haul as services to Newcastle and Edinburgh, are nevertheless run by GNER with Intercity 225 high-speed trainsets. 225s, while matched sets, are not actually EMUs, but loco-hauled, and all of the locomotives but one (89001 "Avocet") are Class 91 electrics, although sometimes a Class 90 will substitute on the Leeds services since they're far from as fast as the Newcastle and Edinburgh services. Most of the Class 91s have names, this one being #91106 "East Lothian."