On the dash of my peugeot 207 the warning sign for engine has come on.... on the information panel ie time. month etc it say pollution fault

If the anti-pollution light on your Peugeot 207 VTi is on, it usually indicates a problem with the vehicle's emission control system. This light may appear in different ways, depending on the model and year of your vehicle, but it usually looks like a picture of an engine with "check" written on it.
Here are some steps you can take to address this issue:

1. Check the gas cap: A loose or damaged gas cap can cause the anti-pollution light to come on. Make sure the gas cap is tightened securely and that it is not damaged.
2. Check the oxygen sensor: The oxygen sensor is responsible for monitoring the level of oxygen in the exhaust and adjusting the fuel-to-air ratio. If the sensor is damaged or malfunctioning, it can cause the anti-pollution light to come on. A qualified technician can diagnose and repair the sensor.
3. Check the catalytic converter: The catalytic converter is responsible for converting harmful pollutants into less harmful gases. If the converter is damaged or malfunctioning, it can cause the anti-pollution light to come on. A qualified technician can diagnose and repair the converter.
4. Check the air filter: A dirty or clogged air filter can cause the engine to run rich, which can lead to increased emissions and the anti-pollution light to come on. Replace the air filter if necessary.

If none of these steps solve the problem, it is best to consult a qualified mechanic to diagnose and repair the issue

vehicle in limp mode need to have scanned for problem

Do you mean anti pollution fault?? Need engine details and fault code to help.

Don't change any sensors yourself. Contact Authorized Service Station or any Proficient Mechanic or Engineer, instead.

Change the pollen filter?

Finding a good garage is necessary for all car owners. Ask around for recommendations. You may be surprised to find it is a Midas shop or something unusual like that. They, and other shops that you only think do oil changes can do repair work.
Your problem may be that the car has gone a certain amount of miles, and wants something checked. Then the mechanic pushes a little button somewhere to reset the gizmo, and all is well.
Few people are familiar with Peugeots, so don't be surprised if it takes some time to find one who is. Mention that is is a Peugeot.

Abs esp is usually a triangle, it would have come on if a wheel was spinning or the car had lost road grip ie traction which is normal in low temperatures, which is why we drive different in low temp's to normal temp's....

I has this on my 207 and a spark plug had gone and the ignition coil needed replacing cost around 270GBP inc labour and diagnostics

There is no such thing.

If youre refering to Antipolution warning coming up on display:

Sadly a common fault with 207s is random fault warnings coming up on the display.

If it's a real fault, then you should notice a fall off of performance and this indicates a trip to your garage to get it fixed.

If the fault comes and goes, or there is no loss of performance, do what most 207 drivers do and ignore it !