The closest train station to the office is Alnmouth. You will need to arrange a taxi prior to arrival as this is a minor station. You can also use Morpeth Railway station. From Morpeth you can catch a bus out to Rothbury or alternatively arrange a taxi in advance of arrival. This may cost upwards of £25.
Follow the A1 to just north of Morpeth. Turn left on to the A697, for approximately 9 miles to Weldon. Turn left on to the B6344 and follow this For 6 miles. The office is on the left, just beyond the tennis courts as you enter Rothbury.