BR CAS (South) Network South East poster: BR CAS (South) poster: Intercity bargain first at weekends - for the use of passengers holding second class tickets on payment, on the train of a £1 supplement. On Saturdays and Sundays from 12 May - 28 September 1986. London - Portsmouth, London - Southampton, Bournemouth & Weymouth. Jubilee Screen. W10083/80/18486. Presented by British Rail. Format: double royal. Dimensions: 40 x 25 inches, 1016 x 635mm.