From TFL:

I am writing to let you know that from Monday 1 July for about three months, bus routes 122, 284 and P4 will be diverted as a result of roadworks in Ladywell Road being undertaken by Lewisham Council (essentially going up Stanstead Rd to Catford - like 185/171)

Route 522, a free shuttle service, will loop one way from Brockley Rise via Stondon Park, Brockley Road, Adelaide Avenue, Ladywell Road and Brockley Grove providing connections with routes 122 and P4 at Brockley Rise and route 284 in Adelaide