Sadly not, you really need to have a flexible work schedule. 

Only being free evenings and weekends with a full-time job does not really work for this kind of work.

These are the qualities we look for:

• Do you have a positive ‘can do’ attitude?
• Are you legally allowed to work in the UK?
• Do you have a National Insurance Number?
• Are you available at short notice?
• Do you have a flexible work schedule?
• Are you reliable?
• Can you get out of bed early?
• Can you get yourself to often quite remote locations?