Update Your Contact Details Here. Please Note, this is for CWU Central Counties & Thames Valley Members ONLY. Please enable JavaScript in your browser to complete this form.Name *FirstLastMembership No. or National Insurance No. *First Line of OLD Address *NEW Address, MUST include Postcode *I also need to update my Death Beneficiary Details *YESNOIf 'YES' – Please enter Name and Address of NEW Death BeneficiaryEmail *Personal Mobile NumberWork PlaceSubmit