Jeff Layman wrote:

One of the shrubby Loniceras. Maybe something like ledebourii?

Good point. L. involucrata ssp. ledebourii is the other ssp, of this
Lonicera and having now looked at the third pic showing more mature
flowers, realise that it is indeed ssp. ledebourii. The main telling
factor is that in ssp. involucrata, the flowers are greenish yellow,
ageing to yellow. In ssp. ledebourii, the flowers are yellow with a
strong reddish orange, external flush as is more obvious in the third
pic.