Bird bags
Clever Baggers - https://www.thecleverbaggers.co.uk/
Suppliers of plain and coloured bird bags ideal for use in ringing.
Colour rings
AvianID - https://www.avianid.co.uk/plastic-darvic-colour-bands
Suppliers of coloured bird rings to the aviculture world, but supplies coloured bands that can be used in combinations to uniquely identify the bird.
Interrex - http://www.colour-rings.eu/
Colour rings and neck bands and other marks for birds that carry unique identifiable letter/number series.
Tom-Rings - http://bird-colour-rings.com
Colour rings and neck bands and other marks for birds that carry unique identifiable letter/number series.
Traps and other equipment
Third Wheel - http://www.thirdwheel.biz/
Offers a selection of live bird traps for ringing purposes.
Moudry traps - http://www.moudry.cz/
Offers a selection of live bird traps for ringing purposes.