Royal or Lancashire Fusiliers?

[ajc347]

I’d be interested to check out people’s thoughts on this post card I recently purchased.

It looks to me that it’s a picture of a WW1-era Royal Fusilier judging from the cap badge. The two things that are throwing me are the use of the grenades as collar badges (I understand that the Welch, Lancashire and Munster Fusiliers wore these), and the shoulder title. It looks like it could be either a Royal or Lancashire Fusilier shoulder title and I’m struggling to determine which.

The post card is undated but was issued by a firm in Tottenham which could potentially provide some extra evidence towards the Royal Fusilier connection (although I’m aware that a lot of soldiers were widely spread around the country at the time).