Hello Paul,
Gliptone do three products, an Intensive Cleaner, Gentle Cleaner (best) and conditioner (best) at
www.liquidleather.com
They have the best leather products in the UK and probably the lowest prices too. I distribute their products in Ireland and looked at everything before choosing same.
Alternatively
www.aglaze.com do a kit including a sealant but more expensive.
Go with Gliptone - Bristol Cars & Rolls-Royce do.
Regards
Daragh.