(23 Mar 2025, 8:43 am)The Kuyoyo wrote The Middlesbrough to Lingfield Park service was originally the 11 via Linthorpe and Acklam until the 10 was introduced in the 2014 network recast. From then until August 2017, the two routes ran every half hour each (every 15 combined) at which point the 11 was withdrawn. The registration has remained the same since - so while there is no service 11, the registration still is for a service 11.
Ah okay, cheers mate!