Taking into account all the relevant factors the following Cherry varieties would be suitable pollinators.
AlbaluGroup ESelf-fertile A high quality Iranian acid cherry with strong cherry flavour excellent for jam and other culinary uses.
Bigarreau GaucherGroup ESelf-sterile An excellent sweet black cherry with a rich flavour.
Black EltonGroup ESelf-sterile A very good black heart-shaped cherry. Very sweet and meaty/firm textured.
Bradbourne BlackGroup FSelf-sterile An old black Kentish cherry.
Emperor FrancisGroup DSelf-sterile Exceptional cherry. A dark red sweet cherry with a pleasingly soft buttery texture which tastes like fine tawny port.
FlorenceIn stockGroup ESelf-sterile A large heart-shaped red on yellow cherry.
Kentish RedGroup DSelf-sterile A small red cherry once grown in many parts of Kent.
LapinsIn stockGroup DSelf-fertile Also known as Cherokee, this is very popular heavy cropping self-fertile sweet cherry.
Merton CraneGroup DSelf-sterile A high quality black sweet cherry.
Merton LateGroup ESelf-sterile A very well flavoured cherry, much like 'Amber'
PennyIn stockGroup DSelf-sterile One of the best new cherries raised at East Malling in Kent.
StellaIn stockGroup DSelf-fertile The most popular sweet cherry in the UK. Self-fertile and reliable cropper.
Summer SunGroup DPartially self-fertile An excellent sweet cherry with good frost tolerance particularly suitable for colder locations.
SunburstIn stockGroup DSelf-fertile A heavy cropping self fertile cherry producing large sweet almost dark red cherries. The flesh is meaty and has a good rich/sweet flavour