Week commencing 22.10.20
 information
 sensation
 preparation
 vibration
 decoration
 donation
 duration
 registration
 population
 determination

Week commencing 15.10.20
 calendar
 appear
 believe
 grammar
 increase
 interest
 opposite
 straight
 strength
 women

Week commencing 8.10.20
 interact
 intercity
 international
 interfere
 interview
 intercept
 intercom
 internet
 interchange
 interface

Week commencing 1.10.20
 submarine
 subject
 subway
 submerge
 subtropical
 subdivide
 subheading
 substandard
 subtitle
 submit

Week commencing 24.9.20
 illegal
 illegible
 immature
 immortal
 impossible
 impatient
 imperfect
 irregular
 irrelevant
 irresponsible

Week commencing 17.9.20
 inactive
 incorrect
 invisible
 insecure
 inflexible
 indefinite
 inelegant
 incurable
 inability
 inadequate