The FTSE 100 company said it now expected ARPA - a key metric for the firm - for the full year to be in the 112 pounds-116 pounds ($139.6-$144.6) range, ahead of its previous forecast of 103 pounds-105 pounds.

($1 = 0.8025 pounds)

(Reporting by Aby Jose Koilparambil in Bengaluru; Editing by Rashmi Aich)