Being an escrow agent in the UK is not a regulated activity. Almost all escrow agents are, in fact, regulated however, because most also carry out regulated activities (either as lawyers, trustees, payment service providers or banks).
Private escrow accounts provide security, trust and transparency to ongoing or ad-hoc payment requirements.
Third-Party Managed Accounts (TPMA's) are a convenient way to manage complex, high-value or even routine payment operations.