Cotoneaster

I have an interest with Bonsai and lost my Cotoneaster of 12 years plus, through lack of attention, when I brought them over, although they travelled back and forth with me for a couple of years. I fortunately still have my perhaps 15 year old Ivy which is only a few inches tall and wide. It's "mother" covered our garage in Bucks!

Does anyone have a Cotoneaster seedling I could have please? I'm not very good with berries but could try if need be over the winter. I would obviously be pleased to reciprocate with indigenous seeds/cuttings from here.

Thank you.