You will probaby want to see the FTSE350 sector charts - these cover the main industry sectors that have members in the FTSE350 - Aerospace, Banks, Beverages etc.
Some industries are only represented in the FTSE250, not the 100, so if you're planning to trade FTSE100 companies only, you will need to ignore the sector charts that only have FTSE250 members. Most FTSE100 sectors (and companies) tend to be in the same medium-term trend as the FTSE100 chart. A Sharescope subscription gives good coverage of all such charts you would need.