Certainly, the straightforward answer is yes. A private investigator can tail you provided they remain off private premises without obtaining the consent of the property owner.
Somerset Private Investigations
1 Long Street
Tetbury
Gloucestershire
GL8 8AA
Office: 01823 215 017
Office: 01823 774 482
Mobile: 07939 940 237
VAT Registration No. 446833667
Somerset Private Investigations is a wholly owned subsidiary of Cotswold Private Investigations Ltd.