The Fall and Rise of Reginald Perrin S01 E06 Trying a Frenchman, Welshman, Scotsman and an Italian

"Fantastically funny"

Reggie tries out various new identities, including Lord Amherst (which attracts the attention of the comely Jean) and Donald Potts (which attracts the less comely Miss Pershore). However, he misses Elizabeth and is upset to find that, since she assumes that Reggie is dead, she's seeing an old flame.