You can claim 100% on advertisng - staff - stationary aprt from hardware items over £200 you can also travel to a foreign country for a trade show this includes food as well.
You can also claim for re-training to brush up on new skills but you cannot claim for being trained in doing the job,
For example
You want to be a carpet cleaner and have not done this before, you cannot claim for the costs of the training courses you will need to be one.
But if you are already a carpet cleaner, then you can claim 100% for refesher courses.