Maplin part N19HT, claims 50000h life, 30° beam angle, 3150K light colour, 12 DC/AC. Light colour is fine, ergonomics OK also.

Bought this in a hurry for a school educational exhibit (early 2012) without noticing the poor luminous efficacy (~37lm/W) at about half that of good lamps in this style and maybe only three times that of halogens.