He leaves after five years at the helm of TISA and 13 years within the organisation.

Mr Dalton-Brown is leaving for family reasons.

TISA says it will restructure its operations following Mr Dalton-Brown’s departure.

Its operations will now be focused into two streams, with the creation of two new Advisory Boards: one for the Traditional Membership Business Unit, which includes TISA’s strategic, policy and events work, and one for the rapidly growing Digital Business Unit, which includes TISA’s digital initiatives and TISA Delivery Entities (TDEs).

Both will be overseen by the TISA Group board.

Carol Knight, currently chief operating officer at TISA, will take over as CEO of the TISA Traditional Membership Business Unit.

Harry Weber-Brown, digital innovation director at TISA, will become CEO of TISA’s Digital Business Unit. 

Gary Bond remains CEO of TISA’s Delivery Entities, TISAtech and TURN.

Ms Knight and Mr Weber-Brown will act as co-CEOs of the TISA Group and sit on the group board.

Mr Dalton-Brown said: “I am very pleased with what our team have accomplished during my time as CEO. It has been a privilege to lead and develop the business, and I will look back on my time at TISA fondly.”

In September TISA called for the 38m unadvised UK savers to be given access to 'personalised' guidance from financial providers to avoid them being 'left behind.'

TISA wants amendments to FCA advice regulations to allow pension and investment firms to provide consumers with more "personalised guidance support services" to help them choose investment products.

TISA said it is not realistic to expect a relatively small number of regulated advisers to meet the advice gap with the FCA estimating 38m people are not using any formal support to assist them with their finances.