Getting registered for home delivery prescriptions would be a useful step - there are a few companies that do this locally: 

The patient also needs to have registered with their GP for online prescriptions. 

Can I pick up a prescription from the chemist for someone else?

Yes – you need to know their name, address and Postcode, but you can just collect the prescription for them.
If you are dropping off the prescription form for them as well, you may also need to know if they pay for prescriptions. 
If they do pay for prescription, it may make sense for them to buy a ‘prepayment certificate’ by calling 0300 330 1341. A3-month PPC costs £29.10 and will save them money if you need more than 3 prescribed items in 3 months. It also means you don’t have to handle cash. 

Can I order a prescription from a Doctors’ surgery? 

For any practice you can download and sign up for the NHS app.  You can verify your ID for the app without coming into the surgery. 
For Lakeside, you can request prescriptions using the dedicated prescription email address: This email address is being protected from spambots. You need JavaScript enabled to view it..  Please include your full name, DOB, address and the name of the medication you are requesting.