A book that I have used a lot in our worships is called ‘Hot Illustrations for Youth Talks’.
Don’t be put off by the title saying youth talks. I have found the illustrations were applicable for all age worships. Also, don’t be put off by the fact it is produced in the USA, it’s easy enough to translate it to UK English.
It contains 100 stories and illustrations and each one is accompanied by a reflection relating the story to our Christian discipleship. You could call them modern day parables.
This is probably the best book of worship illustrations that I have found and there are more than enough good stories to make this book worth buying.
Please note that this is purely a personal opinion and therefore it is not an official endorsement by the Community of Christ.