Peter, will get the info to you, hopefully tonight.
Hi Peter

Sorry for the delay in getting the info to you.

These part numbers are from my past purchases. Please ensure the numbers are still valid for your requirements.

The prices on the parts listed vary from supplier to supplier. I have always used the following and then go to the company with the best price. Please be aware that a couple of these firms have merged, but their prices can vary from day to day.

1. Euro Car Parts

2. CarParts4Less

3. BCC Autofactors

4. GSF

Some items are only available from the likes of Halfords. Be aware that Halfords prices are up and down like a yo-yo. It would be beneficial to join the Halfords motoring club as you get regular £5 discounts that can help bring the prices down.

Air Filter; Part Number (C2861-2) these are Mann Filters: -

Automatic Transmission Fluid; Not purchased any myself.
Battery; B096SPPLA – National Tyres and Autocare did have the best prices with great warranties.
Brake Fluid; Not purchased any myself
Coolant; Comma Xstream G48 – Only ever found it at Halfords.Be aware it is critical that you ensure all the old coolant is removed to ensure there is no contamination which can cause problems for the aluminium engine.
Engine Oil; Mobil 1 – 0W-40 Halfords had the best price when I changed the oil this summer.
Fuel Filter; NOT a part to change yourself
HT leads; Never changed mine
Oil Filter; Part Number (HU718/5X) this is a Mann Filter: -

Power Steering Fluid; Not purchased any myself
Spark Plugs; Not purchased any myself
Sump Gasket & diameter; Do you mean sump gasket or sump plug gasket?
Windscreen Wipers; Bosch, I do not have the part number to hand.

Rear Axle Fluid; Part number Fuchs Titan Sintopoid FE SAE 75W-85 – supplier OPIE OILS (Ebay)

Additional Items:- Personal Choice

Rear Brake Pads; Part Number Brembo (BREP50025 / 646ME0470)

Hope this helps