Well, it is work-related for me

Fisting looks like it's still out, eg Apr 01:

Cuts required to remove harmful sexual practices (fisting, candle flame and hot wax on genitals) for an R18 classification.

and still in May 05:

[10s] cut required to remove sight of fisting. Cut made in accordance with BBFC policy and current interpretation of the Obscene Publications Act 1959.

An Apr 05 judgement helpfully defines fisting as "penetration with all five digits beyond the last knuckle"

In April last year, an example of how dialogue can get cut:

Cuts were required to remove references to an incestuous relationship between two of the protagonists. Cuts made in accordance with BBFC Guidelines and Policy.

Or 'potential harm', like from Dec 04:

Two compulsory cuts for R18 required to remove sights of potentially harmful sexual activity (vaginal/anal penetration with ice products)

Erm, I've had ice in me and have never considered it dangerous… Mind you, it wasn't straight from the freezer (perhaps it's a new fetish: f2a or f2p?!)

But what about female ejaculation, I hear you ask?

There have been 70 videos affected by "urolagnia" cuts from 1st Jan 2004 up to today.

Some – like the Street & Panty Pisser series or Liquid Gold – are obviously urination during sex.. or just somewhere the BBFC doesn't like:

Cuts required to remove sight of urolagnia, sexual activity/urination taking place in public places believed to be in the UK, and to the criminal activity of urinating on private property. Cuts made in accordance with BBFC Policy and current interpretation of the Obscene Publications Act 1959

But this one, from Sep 04, sounds like female ejaculation to me:

Cuts required to sight of urolagnia (in this case a woman ejaculating a fluid, apparently urine, during sex), in accordance with BBFC Guidelines and in line with current interpretation of the Obscene Publications Act 1959.

Annoyingly, it's not always clear from the BBFC database which is which. Look at this one, from Nov 04:

Distributor required to make two compulsory cuts to urolagnia (urination during sexual activity) in line with the current interpretation of the Obscene Publications Act 1959.

You have to check out the reviews of the US version: 

".. we get a bit of freak-show thrown into the middle of the good oral sex. Brooke pisses in her pants and keeps sucking. I'm not sure why Jordan felt this belongs in the movie, but there it is. Once that is out of the way, she gives some decent head and is bent over to .."

Looking at the most recent ones, after the changes in the guidelines, I'm still unsure. Look at Masturbation Celebration (the R18 version, anyway – the 18 was about 45 minutes shorter!) from last month:

To obtain this category cuts of 2m 42s were required., some or all of these cuts were substitutions. The cuts were Compulsory.

Cuts required to sight of vaginal penetration with whole hand and to urolagnia (in this case a woman urinating during vaginal penetration), all in accordance with BBFC Guidelines and in line with current interpretation of the Obscene Publications Act 1959.

Hmm… sounds like female ejaculation. Perhaps it was while she was being fisted? Because there are videos with R18s that – from outside reviews – seem to have it and annoyingly (again) the BBFC don't say what they left in!