Decided to go with an adaptor system rather than straight up bb30a.
2 rides / 300kms old. includes all the spacers, washers etc. The stuff on the red bag has been fit and removed. Bearings removed using a puller rather than being knocked out. Stuff in the clear bag is new and unused.
Happy to post at buyers cost. Collection available in West Norwood. Possibility of hand delivery in London.
Also have the hollogram lockring tool which I can include for £20