Rear axle oil leak

I noticed a slight leak from the rear half shaft so thought I’d check the axle breather which was blocked solid so cleaned it out. This doesn’t seem to have cured it so looks like it needs new seals/ gaskets?
The rear axle is from I believe a Disco 1, any ideas on which seals and gaskets required so I can get them ordered.
Cheers

take a look here https://www.lrworkshop.com/diagrams/land-rover-defender-axles-suspension/rear-axle

v8250 said:

take a look here https://www.lrworkshop.com/diagrams/land-rover-defender-axles-suspension/rear-axle

Click to expand...

Cheers for that, so this the the same as the Disco 1 axle fitted to mine

Discovery one produced from 1990 to 1998. [ with change to 300tdi engine in 94 ] Corteco make good quality seals.