You can read the full Guidance here

02 July 2020 – Bowls England Updated Covid-19 Guidance for Clubs

First two relevant pages below

(f.i. Latest info from EIBA this morning is that are awaiting government information on indoor sports but for the time being, no indoor bowls permitted – sorry about that for those who only bowl indoors.  However, we need to stay safe and not encourage a spike.  I think you would all agree with that.)