The fallout from a planning meeting row over the future of a nursery has claimed another victim.
Tory councillor Bruce Baker resigned from his role as chairman of the north planning committee last Tuesday, after more than six years.
Debate has been raging in the council chamber since the December meeting where councillors did an about-turn and retracted permission they had previously granted for a new nursery to be set up in Ickenham.
This decision has already led to the resignation of Labour Councillor Anita MacDonald who claimed democracy had died in Hillingdon.
Liberal Democrat Group Leader, Councillor Mike Cox, said: "This was a fair decision which was overturned overnight - I think at the whim of one or two Ickenham councillors - which has ridden roughshod over the legal democratic processes. I think the whole thing needs investigating.
"I am surprised Bruce has resigned and I can only assume there is some discontent within the Conservative group."
It is understood that Councillor Baker (Eastcote and E. Rusilip) is saddened by his resignation and enjoyed his time leading the committee.
He cited 'personal reasons' as the cause of his departure.
Councillor Carol Melvin, Conservative representative for Northwood, will take over the role of chairman.