If you can afford it contact the CAI (confederation of aerial industries).
They do basic and advanced aerial and satellite installation courses, an excellent grounding. Ask them to send an email to all of its members in your area, offering labouring help.
The other way is to apply to SKY (
www.sky.com/jobs) or one of its preferred partners, try
www.jobcentreplus.gov.uk and put in satellite or aerial in the search box. Trouble hear is they only do satellite installs, a good engineer would not work for SKY long term, saying this I started there 15 yrs ago. Learn all you can.
Lastly have a look at AV companies, Audio Visual is huge and a growing market.
Good luck.