Left image: main image: Faraday rotation measure distribution (colour scale) of the north-west (NW) and south-east (SE) lobe regions that are detected above the threshold of 8σ_QU, overlaid by the total intensity contours starting at 5 mJy beam⁻¹ and increasing in factors of two. Insets: The absolute value of the RMCLEAN Faraday dispersion function for the brightest polarised pixel in the NW lobe (top) and SE lobe (bottom). Right image: main image: polarised intensity greyscale, in mJy beam⁻¹, overlaid by the total intensity contours. Insets: degree of polarisation colourscale (in per cent) from zoomed in regions of the NW and SE lobes.