expert plant parent for these 2 umbrella plants (St Andrew's BS7)

These 2 gorgeous umbrella plants, both at least 10 years old, are not living their best life here. They both have scale which I don't have the time and staying power to remove once and for all. These plants need a parent who understands plant pests and has the time to put the work in. Once fully recovered they would be amazing. Please help! Ps the tall one is more than 6 feet tall.