Shiv Sena Uddhav Balasaheb Thackeray (UBT) chief Uddhav Thackeray on Thursday hinted at a strong alliance between his party and Raj Thackeray-led Maharashtra Navnirman Sena (MNS) in the upcoming Brihanmumbai Municipal Corporation with a view to avoid a split in the votes of Marathi-speaking people and also to foil the BJP-led government’s attempt to separate Mumbai.