Just an update on this ....
Finally got the parts and got this fixed today (or rather my mechanic did).
Turned out it was the hoses, three of them altogether. The hoses pass through the n/s wheel arch, where they're exposed to every bit of road salt and crap that gets thrown at them (you can see them, just behind the shock absorber). 2 of the hoses were badly corroded. One of them was so bad it fell apart while removing it. The third hose (a low pressure return hose I think) was in better shape but, being the cheaper of the 3 hoses we decided it best to change it at the same time. Parts alone for the 3 hoses was an eye-watering £700 (approx)
And just to add to the financial blow, turns out the subframe has got a rust hole in it too, right below where the PS pipes were leaking. I suspect the PS fluid has been dripping on it for some time and caused it to corrode.
And get this, a brand new front subframe is £1500
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Mark
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2002 FE S8 Ebony Black Pearl
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Cars Owned:
The Tesla Era: 2020 Model S Performance Ludicrous+ (present)
(Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability)
The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present)
The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo
The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust