Decorating things (Bellevue EH7)

Hello, I'm looking for a few items to decorate after a leak and also for outside. I'm hoping to find;

Grey and/or some white undercoat,
Paint stripping liquid,
Wood filler,
Expanding foam,
Grey exterior paint for masonry.

Please let me know if you have any part-used tins. Thank you.
Can you help with this request?
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