Finding the DVD at a UK brick-and-mortar store may be a little difficult at the moment. You may need to order German (European region 2) DVD which has German and English audio tracks, or order from the USA or Australia/NZ and play the disc in a region-free DVD player.

The following online stores however, while allowing shipping overseas, are only available in the German language and don’t have an English translation:
SCM Verlagsgruppe GmbH
– https://www.scm-shop.de/abenteuer-in-jerusalem.html
Gerth Medien
– https://www.gerth.de/index.php?id=details&sku=924787

Online stores from the USA can be found here:
Vision Video – Christian Videos, Movies and DVDs
– https://www.visionvideo.com/dvd/63078D/at-jesus-side-easter
FishFlix.com – Faith and Family Movies
– https://www.fishflix.com/products/at-jesus-side-dvd-christian-movies
Oldies.com – DVDs, CDs, Vinyl, Collectibles
– https://www.oldies.com/product-view/97133N.htm
(No links to these stores are affiliate links, and they are suggestions only).

Note that the PAL release of this DVD runs 4% faster, due to the framerate difference between the original NTSC (24FPS) and PAL (25FPS), causing a higher pitch in the soundtrack and voices. This happens with a very high percentage of PAL DVDs and movies shown on PAL televisions/regions, not just with this movie release.