The Welsh Windbag wrote:

The gardener in this house, (not me), is trying to get hold of ribes
(rubus?) benenden. Having failed with all her usual local suppliers, she is
now casting her net wider. Does anyone know of a possible source within 15
miles or so of Coventry, or a possible on-line source?

Closest supplier listed in the RHS plant finder is...

Ravensthorpe Nursery

6 East Haddon Road
Ravensthorpe
Northamptonshire
NN6 8ES
United Kingdom

Depending on which side of Coventry you're on that's 25-ish miles. The
plant finder says they do mail order.

Ring them on 01604 770548 to see if they have it in stock. They're a
pretty big nursery.

Warwick