I got the oil change to 5w40 Shell as done by @exec and I have found the car to be more responsive (old oil was 10W40 Mobil that was changed 12months ago) so I'm really happy about that. I also tried NGK Iridium plugs too, I haven't really noticed much of a difference but then again I didn't expect to. Figured that it was worth the difference even if its just marketing hype for an extra £9. Finally I did a full (within my ability) MOT check on the car. I genuinely thought I fixed any flaws (incl replacing side indicators as they didn't look orange enough) but unfortunately the car has failed its MOT for the first time ever. Annoyingly, it failed on headlamp alignment!! Anywho its all been fixed, that said, is there any way to actually test the headlamp alignment in the future or do I just get a tape measure and make sure its beam is within tolerances?