Coat of arms of the Bishop Declan Ronan Lang, Bishop of Clifton, England, Great Britain.
The heraldic description first: 
For the Clifton Diocese: azure two bars wavy argent in chief two keys linked one or the other of the second in saltaire with a sword pointing upwards of the second the pommel and hilt of the third in base a fleur-de-lys of the third. 
And for Bishop Declan: sable a fess argent in chief two cinqfoils of the second in base on a mount of the second an oak sprig acorned proper a Book of Gospels closed vert charged with a latin cross.
Motto: Evangelii Nuntiandi (Proclaim the Gospel)
Reference:

www.cliftondiocese.com
Own work
SajoR