how can i involve my sunday church?
Ask your church leaders if you can have a SLOT during a Sunday meeting or prayer meeting. You can give out the Questions for Life cards, simply explain what is happening across Central London during the three weeks, ask people to get involved if they work in central London and ask them to pray.
Invite one of your church leaders to join as a MISSION GUEST. This might involve giving a lunchtime talk for you and your colleagues; meeting your colleagues; helping you with evangelistic street conversations; etc.