wiper blades are £1.25 each at wilkinsons, they're really good quality too.
change both wishbones, they only cost £15 each at your locla motorfactor.
tighten the handbrake using the nut in front of the handbrake lever (lift plastic/leather surround up to see it)
laugh about the tyre
check the lambda's resistance when cold. 4.5 ohms is what you should expect, but the range 4-5ohms is ok. i suspect it iwll be out of range, in which case a £5 scrapyard replacement may be a good option instead of speding £30 on a ne wuniversal one (i dont like using universal lambdas but a fiat dealer will charge a fortune for a new one so second hand is usually what i do)