IHT receipts rise to £7bn for financial year so far
Tax changes see entrepreneurs mull relocation
Industry leaders express frustration as Treasury officials reject proposals
'Essential that issues are addressed and rectified in the draft rules'
Expected to lead to delays in payments to beneficiaries
AJ Bell, Quilter, Hargreaves Lansdown and Interactive Investor CEOs send joint letter
Ideas put forward by industry experts in post-Budget technical consultation
December receipts totalled £620m up 13%
134% rise in year-long cases