Using http://www.echodelta.net/mbs/eng-translator.php the reference, which is from the Cassini system, translated to 53° 18′ 03” N 0° 09′ 44” W

And, yes that is a fairly good lat long for Market Stainton, being TF 22457 79814 on the current OS system.

I should also point out that the reference only describes a 1km x 1km box.