Anyone know anything about disc brakes?

Also - will be 8070 shifters need an adaptor for the bleeding funnel/filler?

Yes

@Brommers posted this up thread.

Does anyone know where I’ll get one please? I don’t really know what search terms to use.

Also - will be 8070 shifters need an adaptor for the bleeding funnel/filler?

its called a rockshox reverb barb connector

https://www.tredz.co.uk/.RockShox-Barb-Connector-Reverb-Stealth_77198.htm?sku=245375&utm_source=google&utm_medium=cpc&utm_campaign=google_shopping#

Its not in stock there but for pre order. Havent looked about much but you should be able to get one.
Good chance your lbs will give you one