Thanks for the quick replies guys.
tonytiger- No its only a suggestion made by the MOT garage and it hasn't been on the diagnostics. From the brief research ive done on this forum the lambda does seem like a likely suspect. Ill have a garage undertake any work which is why Ive been looking for some reasonable priced parts for sale. My aim is to first get an MOT to see how the car runs generally and then take it to stealth for a good going over and recommendations. Ill guess ill have to bite the bullet and get the faults read.
dr mat- The failed emissions read as follows
fast idle test
co level 6.2% (max 0.3) FAIL
HC level 195ppm (max 200) Pass
Lambda 0.84 (min 0.97,max 1.03) Fail
2nd fast idle test
co level 6.49% (max 0.3) FAIL
HC level 196ppm (max 200) Pass
Lambda 0.82 (min 0.97,max 1.03) Fail
Natural idle test
co level 7.42% (max 0.5) FAIL
Does that indicate any problems with the lambda do you think? The seller did say it was running rich.