Ella Walker was a guest of VisitEngland and stayed at the Hog’s Head Inn, Alnwick (www. hogsheadinnalnwick.co.uk; B&B from £114.95) and Raithwaite Hotel, Whitby (www.raithwaiteestate.com; B&B from £227).
Tickets for the North Yorkshire Moors Railway (www.nymr.co.uk) from Goathland to Pickering are £23 per adult.
Adult entry to attractions: Alnwick Castle (www.alnwickcastle.com; from £13.95), Durham Cathedral (www.durhamcathedral.co.uk; £7.50) and the Warner Bros. Studio Tour (www.wbstudiotour.co.uk; from £37).
Do your Harry Potter journey by train. Book through the Trainline App, enabling you to beat station queues and receive live travel updates.
For more information, visit www.visitnorthumberland.com and www.yorkshire.com