Are there any rules against touting or “ambulance chasing”?

There are no longer any restrictions on touting generally. However, for personal injuries work, there are prohibitions on referrals and touting - see ss.67 to 68 of PIPA.

Also, s.32.1.2 of the Solicitors Rule 2007 is the rule against “ambulance chasing” – you cannot seek a retainer in a manner likely to oppress or harass a person who as a result of recent trauma, injury or other circumstances may be at a significant disadvantage in dealing with you at that time. Section 32 also outlines your obligations in relation to the payment or receipt of commissions, referral fees, etc (“any fee, benefit or reward”).