§ Mr. Benn
Performance statistics for subscriber trunk dialling calls prior to mid-1962, were prepared only on an exchange basis and comprehensive figures are available only from July, 1962 onwards. Since that time failures due to faults attributable to the Post Office have been:
1962–63 6.4 Per cent. 1963–64 6.2 Per cent. 1964–65 6.0 Per cent.
The figures exclude call failures where the equipment functioned correctly but there was a shortage of circuits or equipment.