Information from the various Websites. 3 towbars with ADR compliance (might be more, but can only manage to see 3).
Disco Sport - Towing capacity listed as up to 2500kg.
(LR Website).
1. Genuine LR: Towing Receiver Max Cap 2200kg, RRP (fitted) $1601.20
Need to add Tow Hitch $414.00 (fitted) and Electrics $300.00
Remember reading 40mm receiver (but need to confirm).
(LR Website).
2. Hayman Reese: Load Rating 2200kg. Around the $1200 area (unfitted kit).
50mm receiver (not listed so will confirm).
(Hayman Reece Website).
3. Euro Towbars: Load Rating: 2500kg (max trail weight). Price: $1186.00 (unfitted kit).
Euro style system with receiver hidden behind bumper.
Says ADR compliant, but the way I read it; this is inferred because of official EU certification.
(Euro Towbars Australia website).
I'll ask a few more questions and correct any of the above if needed in the next few days.

