6 favorite votes.  

White, near white or white blend Hybrid Multiflora.
Registration name: Waltham Bride

Bred by William Paul (1822-1905) (United Kingdom, 1903).
Introduced in Australia by Henry Sewell, Payneham Nurseries in 1906 as 'Waltham Bride'.

Climber, Hybrid Multiflora, Large-Flowered Climber.  

White.  Medium, double (17-25 petals), in small clusters, cupped-to-flat bloom form.  Once-blooming spring or summer.  

Climbing, few or no prickles/thorns.  

Height: up to 9'10" (up to 300cm).  

USDA zone 4a through 5b.  Very vigorous.  

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