Range from the cheapest PAT testing £92 (Electric Works London based in W10) to the dearest PAT testing £160 (MT Sites Ltd based in W10).
Comparing electricians estimates for PAT testing gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for PAT testing by posting your job to electricians in W10.

"PAT testing Bose speaker and cord. 2 sound mixers - 4 fairy lights - extension lead and extension block . 2 Mac power chargers "
W12
"PAT testing"
W12