Anyone help identify a bike by frame number?

I’m looking to pick up a cheap bike for the pump track, something has come up on Gumtree which has been resprayed in the past (before the previous owner bought it), so no idea what the frame actually is. The respray seems to have been done by Bob Jackson so am assuming it’s not a total BSO if a decent paint job was done on it, but I’d quite like to know what the frame actually is before giving cash.
Frame Number is J98115444, it checks out as not stolen on any database but I can’t seem to work out who the manufacturer might be based on that number.

Got a pic? That might be easier.

https://i.ebayimg.com/images/g/YjkAAOSwz0JgP3ED/s-l800.webp

It’s apparently definitely not an Identiti despite the stickers.

A picture would make it much more likely to be identified

A picture would make it much more likely to be identified

Yup duff link, edited now!

does it matter? looks like a decent pump track bike.

The big downtube with the slash cut to the bottom is very distinctive, and very memorable from my days of reading MBUK etc. Funnily enough, identiti would be one of the brands I might think of.

However – It could well be the same as this –

https://www.moredirt.com/ratemyride/bike/21263

http://www.retrobike.co.uk/forum/viewtopic.php?f=39&t=217284

https://bicycles.stackexchange.com/questions/55385/anyone-able-to-id-and-provide-information-about-this-mountain-bike-dk-club-ro

Well spotted Snotrag! Looks like it will be easily identified by the S stamp on the reinforcement at the top of the top tube, will get more photos and check it out when I go to view it.