These could include:

• Using own car for employers business and being reimbursed at less than the HMRC approved rate (currently 45p per mile for 1st 10,000 miles). The software calculates a tax claim for the difference.
• Using own bicycle for work journeys. (You can claim 20p per mile)
• Purchase of desks, chairs etc for home office. Even if these are not used wholly for business you can make a claim for the business portion, eg 50%.
• Computer equipment, printers, cables, telephones etc partly used for work
• Other additional expenses not reimbursed by the employer,
  eg telephone calls, insurance.