Type of wasp? Ichneumon?

Type of wasp?  Ichneumon?

Observation - Type of wasp? Ichneumon?. Description: Long,thin insect with broad orange band on body. 2 antennae. On inside window of tea room at Coleton Fishacre, Devon

Long,thin insect with broad orange band on body. 2 antennae. On inside window of tea room at Coleton Fishacre, Devon