Steel Fixers, Immediate Start, Twickenham We are working on over 30 projects in and around London (and the Home Counties) and continuously require experienced Steel Fixers in the Twickenham area. If you are looking for regular Steel Fixers work in Twickenham and can provide us with all the required documentation we would like to talk to you! Essential Requirements for Steel Fixers Eligibility to work in the UK. Must have steel toe cap work boots. Must also hold CSCS Card PPE Equipment.