Yes, I've always associated 'The Tigers' with the Royal Hampshire Regt, more so than any other regiment.Weren't the Royal Hampshires known as the Tigers as well. I came across some blokes from Tiger Company R Hampshires at Canterbury in 1972 when I was at JLR RE at Dover. They had been reduced to a company in the late sixties, but became a full size battalion soon after when there was an urgent need for Infantry in 1972. Originally they were slated to amalgamate with 1 Glosters in 1969.
Here's the Hampshire's entry in Regimental Nicknames and Traditions of the British Army, the first edition of which probably goes back to the end of 19th/beginning of 20th century.
(Depot, Winchester.) (Record Office, Exeter.) The Royal Tiger, superscribed "India." "Blenheim," "Ramillies," "Oudenarde," "Malplaquet," "Dettingen," "Minden," "Toumay," "Barrosa," "Peninsula," "Taku Forts," "Pekin, 1860," "Charasiah," "Kabul, 1879," "Afghanistan, 1878-80," "Burma, 1885-87," "Paardeberg," "South Africa, 1900-02." Uniform, Scarlet. Facings, Yellow. Head-dress, Helmet. Cap, Blue. Regimental March, "The Hampshire." The 37th was the first British Regiment to march across India.
THE HAMPSHIRE REGIMENT
Raised in 1702, and within a year was in Holland, and bore a gallant part in Marlborough's campaigns. Few regiments can show a more eventful record of service during the whole of its career, and it has won fame in all parts of the world. The 37th is one of the six British infantry regiments which fought at the battle of Minden, 1st August, 1759; still commemorated in the regiment by the wearing of roses on the anniversary. The 2nd Battalion (67th Foot) was raised in 1756 and after arduous service in the West Indies, the Peninsula, and elsewhere it went to India, where it served for twenty-one years and bore a distinguished part in the capture, after a siege of eleven days, of the fortress of Asseerghur, regarded as the Gibraltar of the East. For its gallantry in India the crest of the Royal Tiger was bestowed. In subsequent service in the East the 67th took part in the attack on the Taku Forts, where four Victoria Crosses were won by Hampshire men. Nickname: "The Hampshire Tigers."
The same publication gives the Leicestershire's nick-name as 'The Bengal Tigers'
Link Regimental Nicknames and Traditions of the British Army