MOT work update. Offside outer boot completely shot. CV joint probably knackered. Nearside still intact but the rubber is looking perished. All the bolts on the wheelsides were hex. Cleaned the heads, hammered a bit in, cleaned out again the they all come undone with no issues. Both side of the gearbox were all splines. Same process as hex and they all came out intact. Don't mistake torx for spline bits, similar but they will ruin the bolt heads. Spline on the left. Offside CV joint showing signs of damage/wear. Changed this CV joint and all 4 CV boots as they are not expensive and I was laying on the floor anyway. The washer problem was a split hose on the lower connection of the wiper stalk. I just shortened this by 40mm and reconnected. Problem solved. The oil leak looks like it's straight out of the sump plate. I'll have a look at this tomorrow.