The official group photograph of the DGN Trojan Marching Band, at the 2019 London New Year's Day Parade may be downloaded HERE, free of charge.
If you would like to access professional photos taken during the LNYDP Concert Series and LNYDP 2019, they can be accessed via the LNYDP Flickr account
https://www.flickr.com/photos/londonparade/albums
LNYDP currently has a limited selection of photos available, but later this month they will be publishing more of each performance group. Make sure you check back!